Model Engine Maker

Supporting => Vehicles & Models => Topic started by: Robert Hornby on April 09, 2016, 05:05:11 AM

Title: COLUMBINE - The Boat
Post by: Robert Hornby on April 09, 2016, 05:05:11 AM
Procrastination over. I have commenced finally on the boat hull. A left over kitchen cupboard door was brought into service a base for the Urethane foam block. I will glue the foam to the base with contact adhesive, this is to provide some substantial support
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on April 09, 2016, 05:13:52 AM
Oops, Some how that got posted too soon.  Start again.

Procrastination over. I have commenced finally on the boat hull. A left over kitchen cupboard door was brought into service a base for the Urethane foam block. I will glue the foam to the base with contact adhesive, this is to provide some substantial support whilst I shape the foam. I will make cardboard profiles for each section at 50mm intervals. I have ordered the urethane which will take 10 to 12 days as it has to be specially made to the size I need - 1000mm x 290mm x 270mm.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Profile-1s_zpskcvxuca8.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Profile-1s_zpskcvxuca8.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Profile-2s_zpsgrliolzc.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Profile-2s_zpsgrliolzc.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Profile-3s_zpslcabmnq7.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Profile-3s_zpslcabmnq7.jpg.html)

Robert

Title: Re: COLUMBINE - The Boat
Post by: zeeprogrammer on April 09, 2016, 12:03:54 PM
 :popcorn:

Is there a picture of what you're striving for?
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on April 09, 2016, 12:13:35 PM
Sure is Zee

(http://i1327.photobucket.com/albums/u667/RobertHornby/Columbine-d_zpss5jzxtuy.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Columbine-d_zpss5jzxtuy.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Columbine-21_zpsdjtvnqem.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Columbine-21_zpsdjtvnqem.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: zeeprogrammer on April 09, 2016, 01:57:17 PM
Oh nice! Thanks.
Looking forward to this!
Title: Re: COLUMBINE - The Boat
Post by: Johno on April 09, 2016, 04:43:29 PM
Hi Robert,

Looking forward to following the build process. Have you decided on the steam plant/engine?

Cheers

Ian
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on April 10, 2016, 12:24:38 AM
Ian

Very much so, if you check out the engine and boiler builds in the other categories you will see them.

 (http://i1327.photobucket.com/albums/u667/RobertHornby/Steam%20piping-1-s_zpszvwovgi8.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Steam%20piping-1-s_zpszvwovgi8.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on April 10, 2016, 01:08:36 AM
I am really looking forward to this too Robert. I don't know anything about boats but love seeing what you guys to in creating them.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Sackett on April 30, 2016, 11:26:58 PM
Is this a model,, or gonna be a full sized boat???
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on May 01, 2016, 05:53:12 AM
It is a model Sackett, 1:7 scale, i.e. the prototype is 7 metres long, my model will be 1 metre long.
Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 06, 2016, 05:01:59 AM
The urethane foam has finally arrived and now I am able to proceed.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3725_zpssxtzlvgo.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3725_zpssxtzlvgo.jpg.html)

The block is 1000mm x 290mm x 270mm, the material is very soft and even looking at it too hard will cause it to dint. I glued the block to the wood pattern and screwed a 3"x 2" timber to enable me to hold it all in my work horse.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3727_zpsyvinz1h6.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3727_zpsyvinz1h6.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3726_zpsvpqe4ax3.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3726_zpsvpqe4ax3.jpg.html)

Next was the shaping the for and aft profile prior to making the groove for the keel.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3728_zpsjczhcdwl.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3728_zpsjczhcdwl.jpg.html)

The router came out to cut the 10mm wide x 15mm deep groove.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3730_zps4j0mjnt1.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3730_zps4j0mjnt1.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3731_zpsvijqye3w.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3731_zpsvijqye3w.jpg.html)

The wood keel is made up of about 10 pieces of Merbau (left over off cuts from a new deck) I took quite some time to align the aft part of the keel to drill the prop shaft hole at the required 3 degrees from horizontal, I had to drill from each end and there was only a 1mm miss alignment, which I am able to accommodate and adjust with the gland bushes.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3737_zpsr7mzjyt8.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3737_zpsr7mzjyt8.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3732_zps130opss3.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3732_zps130opss3.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3739_zpsqdh9r6r2.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3739_zpsqdh9r6r2.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3738_zpsey7zloli.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3738_zpsey7zloli.jpg.html)

I glued the gland bushes into the timber with 2 pack Araldite (I have used this previously with success) The forward part of the keel will be attached next then more profiling of the foam.

Robert


Title: Re: COLUMBINE - The Boat
Post by: 10KPete on June 06, 2016, 06:08:19 AM
All right then!! 'bought darn time, I thought I was going to grow old and feeble before this boat started taking shape... :old:

 :lolb:

Following closely!

 :cheers:

Pete
Title: Re: COLUMBINE - The Boat
Post by: zeeprogrammer on June 06, 2016, 11:24:42 AM
I saved some  :popcorn: for this.

Looks like an excellent start on the hull.
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on June 06, 2016, 01:04:42 PM
Robert, anxiously following along still. How did you cut the foam aside from the router groove I mean. Bandsaw? Hot knife?  Just curious given the size of that chunk of foam  :o

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 06, 2016, 01:15:49 PM
Bill, I cut the triangle section from the stern with a cross cut wood saw, and then finished it off with a "surform" tool. It is like a long cheese graterer. The forward end was just with the surform tool.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3741_zpsifxllgny.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3741_zpsifxllgny.jpg.html)

It removes the foam very quickly, indeed I have to be carful not to take too much off.

Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on June 06, 2016, 01:19:28 PM
Thanks Robert, it worked quite well too looking at the pictures.  Gosh I remember those surform tools from my youth but used more for woodworking. Haven't seen one in years.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 06, 2016, 11:53:27 PM
Gluing the final joint of the keel last evening.

 (http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3740_zpsiz5jrvzg.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3740_zpsiz5jrvzg.jpg.html)

The finished keel, apart from some sanding. Part of the keel will be visible on the interior of the boat so that will be finished in lacquer as will be the rest of the timber work. The outer part will be fibre glassed along with the hull.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3745_zpsgo8v0txi.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3745_zpsgo8v0txi.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3743_zpsgtk3br7u.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3743_zpsgtk3br7u.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3744_zpsgjzqxn81.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3744_zpsgjzqxn81.jpg.html)

The next part will be to continue with the profiling starting with the plan view shape. I propose to print out full size end view profiles then cut each one (at 50mm intervals) out of stiff cardboard and use them as templates.

Robert


Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on June 07, 2016, 12:24:01 AM
Really looking forward to seeing how all this comes together Robert. I am predicting a lot more Styrofoam dust/shavings in your future  ;)

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 07, 2016, 01:20:32 PM
Quite right Bill  -  here's the dust

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3749_zpshwgjeumt.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3749_zpshwgjeumt.jpg.html)

The foam cuts very easily with a saw

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3746_zpsiysoispq.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3746_zpsiysoispq.jpg.html)

And the surform tool makes light work of the shaping.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3747_zpsw2hnptwk.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3747_zpsw2hnptwk.jpg.html)

Next is the printing of the for/aft profiles and cutting out of the cardboard templates. I will have to take things very carefully with the next operation to avoid any removal of the foam as I imagine it will be tricky to fix up a stuff up.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3748_zpsxkd9puwl.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3748_zpsxkd9puwl.jpg.html)

Robert



Title: Re: COLUMBINE - The Boat
Post by: crueby on June 07, 2016, 02:17:09 PM
Will the foam be just as a form for fiberglass covering, or will it remain as the hull itself? I've done hulls with other foams, glassed/epoxy, then melt out the foam with acetone. Is that your plan, or another method?

 :popcorn:
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on June 07, 2016, 02:27:14 PM
That is some nice work Robert...amazingly smooth finish you get with that surform tool!!

Bill
Title: Re: COLUMBINE - The Boat
Post by: zeeprogrammer on June 07, 2016, 11:48:48 PM
So cool. Very glad to see the steps you're taking.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 08, 2016, 08:52:58 AM
Crueby,
The foam will be removed after all the fibre glassing is complete. I am expecting to have to dig it out as Acetone will not melt it (or so I am told). I propose to line the foam with kitchen cling wrap prior to applying the fibre glass to assist the removal process.   :)
Robert
Title: Re: COLUMBINE - The Boat
Post by: crueby on June 08, 2016, 01:42:50 PM
Crueby,
The foam will be removed after all the fibre glassing is complete. I am expecting to have to dig it out as Acetone will not melt it (or so I am told). I propose to line the foam with kitchen cling wrap prior to applying the fibre glass to assist the removal process.   :)
Robert
Yeah, as I recall the acetone trick works on the styrene type foams, not on the urethane foam.
Title: Re: COLUMBINE - The Boat
Post by: Ramon on June 08, 2016, 03:21:12 PM
Hi Robert,

Good to see you have made a start on your hull. It certainly looks a big lump of foam, amazing to think that somewhere inside it lurks a lovely flowing form just itching to burst out - happy 'Surforming'  :). Like Bill it's been a long time since I saw a Surform tool, I do have a very small hand held block plane version somewhere, the blade well shot, it must be 40 odd years old.

Re wrapping your form in cling film as a release aid, I know you have a friend well versed in moulding - have you or he tried using the brown glossy parcel tape as such? Makes for covering it much easier especially in corners and has a super self releasing surface.

Just a thought  ;)

Regards - Ramon
Title: Re: COLUMBINE - The Boat
Post by: scc on June 08, 2016, 05:54:58 PM
Hi, Robert,           I'm following this and enjoying every minute.   Thanks for posting and the great photos.                   Terry
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 08, 2016, 11:03:18 PM
Ramon, thank you very much for the tip on the packaging tape. I do have half a roll left over from our house move a couple of years ago, (and I knew where it was - http://www.modelenginemaker.com/Smileys/default/woohoo.gif )
Robert
Title: Re: COLUMBINE - The Boat
Post by: Johno on June 09, 2016, 07:35:29 PM
Hi Robert,

Following along with great interest. I can see that the fibreglass/resin will follow the smooth contours of the foam on the inside of the hull, what are your plans for the outer profile, are you going to represent wooden planking?

Cheers

Ian   
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 10, 2016, 12:56:15 AM
Hi Ian,
The plan for the outer face of the hull will be smooth just like the prototype (see the photos near the start of this thread). Obviously the prototype would have/is timber but after I paint the fibreglass it will look the same. I had considered building the hull in wood but I was not too sure of my abilities to get it as good as I would like. I will spend time in getting the glass smooth and without ripples. There is a name for a smooth hull but it escapes at the moment.  :ShakeHead:
Robert
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on June 10, 2016, 01:44:24 AM
There is a name for a smooth hull but it escapes at the moment.  :ShakeHead:
Robert

Fair

Pete
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 10, 2016, 06:21:10 AM
Thanks Pete, but that doesn't sound like the name I used to remember- a much longer word I am thinking.
Robert
Title: Re: COLUMBINE - The Boat
Post by: derekwarner_decoy on June 10, 2016, 06:52:27 AM
Robert...

I have seen a few small images of the vessel lines you have created, however am unsure if the vessel beam...example Q>Q<Q is an actual simple dimensional flat deck beam/width or does it represent the narrower actual deck level beam due to the fore & aft rise of deck?

Derek
Title: Re: COLUMBINE - The Boat
Post by: Maryak on June 10, 2016, 09:01:15 AM
Hi Robert,

Wonderful project!

I understand your foam idea on which will be overlayed the fibreglass. I am intrigued how you will ensure uniformity port v starboard carving/shaping from a single block

Maybe this could be more easily achieved by dividing the hull into waterline sections keyed to the keel viz:

(http://i389.photobucket.com/albums/oo340/Maryak/NobbyHull_zpskn72uxbz.jpg) (http://s389.photobucket.com/user/Maryak/media/NobbyHull_zpskn72uxbz.jpg.html)

(http://i389.photobucket.com/albums/oo340/Maryak/NobbySec11_zps2iygsgme.jpg) (http://s389.photobucket.com/user/Maryak/media/NobbySec11_zps2iygsgme.jpg.html)

(http://i389.photobucket.com/albums/oo340/Maryak/NobbySect2_zpsbymzjm4a.jpg) (http://s389.photobucket.com/user/Maryak/media/NobbySect2_zpsbymzjm4a.jpg.html)

Anyway food for thought maybe and I hope it helps just a little. Of course in your case there is no requirement to worry about the inner shape of each section as all the foam will dissapear when the glass work is complete and cured.

Regards
Bob
Title: Re: COLUMBINE - The Boat
Post by: michaelr on June 10, 2016, 09:10:15 AM
There is a name for a smooth hull but it escapes at the moment.  :ShakeHead:
Robert

Fair

Pete
Smooth planked boat hull, Carvel
Mike.
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on June 10, 2016, 09:31:39 AM
Oh, I thought Robert meant a hull with smooth lines. As in a fair hull.....

Yes, carvel planking gives a smooth hull as opposed to clinker or lapstrake....

Thank you Michaeir!!!

Pete
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 12, 2016, 07:50:35 AM
Thanks Derek, Pete Bob and Mike,
Regarding the hull profile I have drawn up a profile for each 50mm division/spacing. I will print out each profile (from B to U)full size and then cut out a cardboard template which I will use to obtain the correct shape in the foam.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Scan_20160612_zpswtf20cc5.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Scan_20160612_zpswtf20cc5.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Scan_20160612%202_zpszqxtvd0f.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Scan_20160612%202_zpszqxtvd0f.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Scan_20160612%203_zps1p5gew0o.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Scan_20160612%203_zps1p5gew0o.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Scan_20160612%204_zpsxwtbouha.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Scan_20160612%204_zpsxwtbouha.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Scan_20160612%205_zps9rnq3aan.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Scan_20160612%205_zps9rnq3aan.jpg.html)

The profiles are just my thinking of how the shape should be, I only have photos of the prototype in the water so cannot see the lower portion. I have looked at other similar type boats on the net and used them as a guide. I am open to advice and suggestions.

Robert
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on June 12, 2016, 09:55:21 AM
Too late now, but the last time I made a plug mold I cut out all those stations and laminated them into the foam block. Then just cut the foam down to the stations! WaaaLaaa!

Pete
Title: Re: COLUMBINE - The Boat
Post by: MJM on June 12, 2016, 11:03:15 AM
Can't help thinking that the profiles should be fuller in the middle, say between stations H to O. Some illustrations here may help
http://www.selway-fisher.com/Steam2030.htm

Martin
Title: Re: COLUMBINE - The Boat
Post by: Ramon on June 12, 2016, 11:55:34 AM
Hi Robert,

Looking at your profiles and layout I believe that what Derek was alluding to (post #31) is going to cause you some dimensional issues.

You have a deck plan laid out giving your dimensions across the beam at each station but the deck plan is flat and the same length as the transom to stem in the side elevation whereas it should be projected to take account of the sheer. As drawn your beam dimensions will be totally different at deck level given the curvature at each station.

I also agree with Martin (MJM) in that the profiles should be much fuller particularly in the centre area of the hull. I assume you have laid these out to take account of your steam plant volume/footprint.

Personally I would focus more on getting the shape fair and full to your eye than try to bring the foam to your templates -  as someone who began (working!) life on a shipyard there was an old saying - "N'e'er were a boat built with two sides a like"  ;)  You will be surprised just how close you will get by eye and if you felt that unsure it would be much better to shape one side and take a template from at each station and bring the other too it than to work to your templates which as you state are just your thinking of what they should look like.

If you want to be really certain how your hull form will look before attacking that foam block. Cut all your templates from thick card adding on the height from deck level (the sheer) to a straight horizontal line above (as you have drawn). Stick them to a board on a centreline and then run some thin strip wood around to see how they fair.

Pete has the right idea though - foam sections between card profiles. Shape the foam to just expose the card. But the profiles do need to be right and fair to begin with.

You did ask - hope that helps  :)

regards - Ramon


PS I have just had a quick google - there's quite a bit out there particularly on model yacht hulls but this might be worth a look as a starting point
https://www.youtube.com/watch?v=ocwKII_fVwU (https://www.youtube.com/watch?v=ocwKII_fVwU)
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 13, 2016, 12:03:01 AM
Once again many thanks for the input gentlemen, I do appreciate the time and effort put into the comments and valued advice. I do see that the form needs to be fuller and will redraw with this in mind. It will also give the advantage of a lower floor line around the steam plant.

The height of the bow some times looks quite high to me, I have a full side view of the prototype and from this scaled the deck shape.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Columbine-b_zps2f50ebdb.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Columbine-b_zps2f50ebdb.jpg.html)

As the prototype was built for the Admiralty around 1890 I am assuming it was used for transporting naval officers from shore to ship when anchored off. The seas can be quite lumpy off shore around Plymouth / Portsmouth so a high prow would seem to be a sensible design to limit the egress of water.

Another feature I am unsure off is the need to have a rudder support at its low point, i.e. an extension of the keel. I am presuming this would both provide support for the rudder and also some protection from hitting obstacles on the sea bottom.

Robert 
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on June 13, 2016, 01:51:26 AM
The section templates are good if you are pretty set on that shape. Otherwise just start carving that big block, a little at a time, and the shape you want will appear. Just remember that the foam is expendable and if you take off too much just glue in another piece!

Let your inner sculptor out!!!

I've always felt that a boat that size and weight should have a rudder shoe. A good solid extension of the keel shoe.

I like the shear line on that boat in the picture. The trick with a high shear like that is to avoid a line that has a hog of any size forward. Sometimes a hogged line can appear from certain angles even though you don't see it in profile or plan.

Build that boat!!

Pete

PS: I was just comparing the shear you have drawn vs. the photo. I think your drawing has a shear just a tad deeper than the photo...????
Title: Re: COLUMBINE - The Boat
Post by: Maryak on June 13, 2016, 04:22:09 AM
Hi Robert,

I hope this will help. The concerns others have raised about the excessive sheer in your model appear to be valid. What may have happened is that no allowance has been made for the camber of the hull/ deck athwartship viz:

(http://i389.photobucket.com/albums/oo340/Maryak/New%20model_zpsnnj1e2xb.jpg) (http://s389.photobucket.com/user/Maryak/media/New%20model_zpsnnj1e2xb.jpg.html)

(http://i389.photobucket.com/albums/oo340/Maryak/New%20modelp_zpsgjgcbdva.jpg) (http://s389.photobucket.com/user/Maryak/media/New%20modelp_zpsgjgcbdva.jpg.html)


Sorry for the quick and dirty hull but I was only interested in illustrating camber from your side on photo.

Regards
Bob
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 13, 2016, 05:38:24 AM
OK I have redrawn the profiles with more fullness, especially midships. Maybe I have gone a bit too far, I value comments here.

I still cannot get my head around the concerns regarding the deck line sheer. The board I made is of course flat but it represents the plan view of the true deck line as seen from above. I understand the curved length of the deck line will be greater but do not see how that will be a problem for me. I propose to form the foam to the profiles as drawn up to the deck line. The beam width at the true deck line is 290mm. The fibre glass will be applied to just above that (say 10mm) and when the foam is all removed the glass will be trimmed to the correct deck line. Also considering I am only getting the shape as reasonably close to the photos and hopefully not subject to scrutinisation by the British Navy.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Scan_20160613_zpsksth31ll.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Scan_20160613_zpsksth31ll.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Maryak on June 13, 2016, 08:14:26 AM
Hi Robert,

I understand where you are coming from but for later on the transom at least should have a curved top or there will be an ugly gap and needless to say the reverse mold for the deck will have to be curved. Because sheer and beam are different at each station, the curves are therefore also different and not a constant.

One of the hardest thing about wooden vessel hulls is to visualise the 3D hull in a 2D lines plan. With most 19th century vessels every curve is either a spline or a bezier and there are vitually no straight lines vertically either side of midships.

Here is a fantail 19th century launch if you look closely you will see no vertical sides with a very slight Tumblehome around the midships sections. Tumblehome meaning the hull slopes outwards from the deck line before reversing to curve inwards to the keel.

(http://i389.photobucket.com/albums/oo340/Maryak/Fantaild1_zpsybb4kesd.jpg) (http://s389.photobucket.com/user/Maryak/media/Fantaild1_zpsybb4kesd.jpg.html)

HTH

Regards
Bob
Title: Re: COLUMBINE - The Boat
Post by: michaelr on June 13, 2016, 08:22:20 AM
Robert.
It may be to late but you should have a look at the Bread and Butter method for building your hull mould, this link will give you the idea

http://www.sfmbc.net/Beginners_Boat_Building_Part1_R1.pdf

All the best with your project.

Mike.
Title: Re: COLUMBINE - The Boat
Post by: Ramon on June 13, 2016, 08:45:30 AM


Sorry for any confusion Robert (and Bob, I wasn't considering taking camber into account at this stage)  but I was looking at it from the point that you were going to shape the hull from the keel down to the board. Obviously if the block is shaped perpendicular to the board to begin with then the sheer line is drawn on and the hull shaped to that from the keel down you will arrive at your desired deck plan.

I think that the midship sections are much better and will allow you much better positioning of the plant - particularly lower down keeping the CG as low as possible.

As Pete says - get the Surform out and 'make that boat'

Regards - Ramon

Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 15, 2016, 06:41:34 AM
Having settled on a profile thanks to the input from my fellow forum members I have commenced the flank shaping. I have to take this really slowly with lots of care as I prefer not to have to add foam if I go too deep. I am using the same profile for K L & M as they are very similar to within a mm or 2. I find I can shape the foam with the surform tool to within about 10mm and then use a coarse sandpaper on a rubber block to bring it to the shape. it is quite a bit slower but less stressful.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3750_zpsywcoaeqn.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3750_zpsywcoaeqn.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3751_zpscfpappoo.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3751_zpscfpappoo.jpg.html)



Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 16, 2016, 02:48:08 AM
Progress is going well, The port side is done and I am pleased with the shape and finish, and the cardboard cut outs worked well for me. The side starboard will be a bit less stressful, as as well as the cut outs I have the other side to guide me.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3752_zpsusdf3e66.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3752_zpsusdf3e66.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3753_zpsbzeffmr6.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3753_zpsbzeffmr6.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: crueby on June 16, 2016, 03:01:50 AM
Quick progress on the carving, nice!!
Title: Re: COLUMBINE - The Boat
Post by: Maryak on June 16, 2016, 03:05:31 AM
Looking GOOD Robert,  :NotWorthy:

Regards
Bob
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on July 18, 2016, 08:01:47 AM
It has been a little while since I posted a progress report, mainly due to holidays away and other comments.
But another reason was my disappointment with the profile of the mould on the port side after shaping it. It looked fine on the CADD drawings but not quite right in reality. In forming the starboard side I address this and was happy very with the shape. So the tricky part was to fix up the first side as it required building up. I cut thin patches of foam about 10mm thick and attached them with hot melt glue, re smoothed to match the good side which seemed to work well apart from the very front where I built up the shape with play doh. It looks absolutely horrible but when all the glass goes on and the foam and doh removed I am sure all will be OK.
I cannot get this part done quickly enough so no one else sees the patch up job I have had to do (including myself) Shaping metal is by far easier and rewarding, foam is not.
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3840_zpsk9o43k9y.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3840_zpsk9o43k9y.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3839_zpsnarzevz8.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3839_zpsnarzevz8.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3838_zpsxnlmhalf.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3838_zpsxnlmhalf.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on July 18, 2016, 12:15:19 PM
Hey, it's just a plug mould. A throw-away. Doesn't matter what it looks like! I've seen much worse on full sized
plugs...

I'm liking the current shape much better than where it was before...

Keep it coming!

Pete
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on July 19, 2016, 12:01:07 AM
I don't pretend to understand all the ship jargon Robert, but it sure looks nice from what I see. The whole process is fascinating!!

Bill
Title: Re: COLUMBINE - The Boat
Post by: zeeprogrammer on July 19, 2016, 01:48:04 AM
I don't pretend to understand all the ship jargon Robert, but it sure looks nice from what I see. The whole process is fascinating!!

What Bill said!  :ThumbsUp: :ThumbsUp:
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 01, 2016, 05:34:50 AM
Still fibre glassing, this side is the last sheet to go on, then the other side in a couple of days and the glassing will be finished. After that some more sanding then a coating of filler or probably several coats to get the surfaces very smooth and straight. I plan to spray a coating of primer between filler coats so that after sanding the low spots will show up.
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3842_zpsqj7lfkuo.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3842_zpsqj7lfkuo.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3841_zpsgmpwxulc.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3841_zpsgmpwxulc.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 17, 2016, 06:59:44 AM
On completion of the fibre glassing and filling with ‘bog’ I next thought about spraying it with a ‘high build’ primer so following that I could get the sides really flat and smooth. The local car accessories shop sells pressure pack high build primer but of course it is only ‘single pack’ not two pack. I do have a spray gun but it is only suitable for regular paints, not thick ones.

So I gave an old acquaintance a call to ask his advice on weather single pack would be suitable or not (he is a professional spray painter/panel beater). He strongly recommended two pack and offered to spray it for me the next day as he was going to spray a car (1971 Holden Monaro) with high build. So I high tailed around there (only half an hour away) left it with him and pick it up the day after. He has done a lovely job and I am very pleased indeed. I forgot to ask him why they apply a very light and spasmodic splash of black over the primer. I have seen this on primed cars previously, any one any ideas on this?

The next job is to make a stand for the hull so I can get it the correct way up and start work on removing/cleaning away the foam and cutting the side to the correct deck line.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3841_zpsgmpwxulc.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3841_zpsgmpwxulc.jpg.html)
The last of the fibre glass going on

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3848_zpsldu1urby.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3848_zpsldu1urby.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3846_zpsbbbsocj1.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3846_zpsbbbsocj1.jpg.html)

The black line is the cut line for the deck position.

Robert
Title: Re: COLUMBINE - The Boat
Post by: crueby on August 17, 2016, 02:17:21 PM
Hull looks great!   :ThumbsUp:

I have seen the light paint coat sprayed on top used as a guide when block sanding - lets you see where the low spots are since they dont change color.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 17, 2016, 11:27:22 PM
Thanks Crueby, I was thinking along those lines after giving it more thought.
Also sorry about the duplicate picture - senior moment.
Robert
Title: Re: COLUMBINE - The Boat
Post by: Don1966 on August 18, 2016, 12:20:18 AM
Lovely work Robert and I do like the shape. I however have a question about after you remove the foam, are you placing ribs inside for any support and could you have done so before fiberglass? I don't know anything about fiberglass work so just asking if the fiberglass is strong enough without them.

Regards Don
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on August 18, 2016, 12:35:53 AM
It sure looks good to me Robert. Still looking forward to further progress.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 18, 2016, 07:30:26 AM
Thanks guys for the comments. Don, yes I will be fitting ribs on the inside after cleaning all the foam away and I am thinking it may need a little more glass inside especially at the bow where I had some difficulty getting the foam to my liking. The glass is quite thick at around 2mm/3mm so would be strong enough by itself but wood ribs will look the part.
Robert
Title: Re: COLUMBINE - The Boat
Post by: Ramon on August 18, 2016, 09:55:05 AM
It's looking good Robert - bet you can wait to get it hollowed out

Regards - Ramon
Title: Re: COLUMBINE - The Boat
Post by: Ian S C on August 18, 2016, 01:13:45 PM
I thought perhaps the way of making this sort of hull would be to cut slots in the plug and fit the ribs in the slots before covering, similar to the way the fuselage halves of the Mosquito are made, although it could be a bit of a bind getting the foam out. It's sure looking good so far.
Ian S C
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 19, 2016, 02:07:39 AM
Ian, I had considered letting the ribs into the foam prior to glassing but the material is quite difficult to work with any accuracy and as you say could have been a task to clean out the foam afterwards.
Robert
Title: Re: COLUMBINE - The Boat
Post by: Ian S C on August 19, 2016, 01:41:10 PM
Reckoned it might have been the reason.  The Mossie's are being built on wooden moulds, some of the original ones were concrete, so no foam to dig out, also any glue was on the outside.
Ian S C
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 20, 2016, 07:19:09 AM
The hull stand/cradle is underway with some preparation work on the base and arms. Once again I am recycling some old timber from my patio deck (do not know what wood it is but suspect it is Beanatree). I took the decking to my 'Mens Shed' and using the thicknesser dressed up the faces on the weathered surfaces. It comes up very nicely and I am considering using it for the boat timbers. I have glued 5 pieces together to form the base and I will glue underneath 4 battens to minimise cupping.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3850_zpscee3as1t.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3850_zpscee3as1t.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 21, 2016, 12:40:17 PM
The dry dock/cradle is now complete and ready to hold Columbine upright for fitting out of the ribs. I love working with old materials to reuse them rather than to provide heat in someone fire place or worst still end up in land fill. The old nail holes were filled with plugs from the same wood, kind of gives a bit of character.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3855s_zpsasyjm4ej.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3855s_zpsasyjm4ej.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3857s_zps4idlskls.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3857s_zps4idlskls.jpg.html)

I cut the old kitchen cupboard door of and surplus foam with a hack saw blade. It cuts very easily and was soon dispatched to the bin.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3858s_zpsplwuwmvi.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3858s_zpsplwuwmvi.jpg.html)

The digging out of the rest of the foam was achieved with a 25mm chisel just by hand,no hammer needed.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3860s_zpstyhuzipe.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3860s_zpstyhuzipe.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3862s_zpsjptpaz8b.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3862s_zpsjptpaz8b.jpg.html)

The remainder of the foam will come out tomorrow.

Robert


Title: Re: COLUMBINE - The Boat
Post by: Ian S C on September 21, 2016, 03:15:34 PM
Just wondering, would something like Glad Wrap over foam make extracting the foam easier?  Thirty  or more years ago I made a fiber glass fuselage for a model glider, the mould was wooden, and I treated it with a coating of wax, don't know what happened but about half of the fiber glass stuck to the wood, that took hours to separate, and I never got all of the wood off.
Ian S C
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 22, 2016, 02:46:35 AM
Ian,
I did attempt to line the foam with cling film prior to applying the fibre glass but it was a total failure for me as the glass matting persisted in sliding off. However the foam cleaned of the glass very well and as I always intended to fill and smooth down the inside anyway. So all is good for me.
Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 29, 2016, 07:51:49 AM
With all the foam removed the next task was to smooth out the interior surface, starting with more filler.

(http://i1327.photobucket.com/albums/u667/RobertHornby/019-s_zps9gkbxthb.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/019-s_zps9gkbxthb.jpg.html)

I spent a couple of weeks getting the interior to my liking.

(http://i1327.photobucket.com/albums/u667/RobertHornby/020-s_zpsznzc0rfp.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/020-s_zpsznzc0rfp.jpg.html)

A coating of primer changes every thing and shows up all the imperfections dramatically So more filling and sanding.

(http://i1327.photobucket.com/albums/u667/RobertHornby/022-s_zpsbucbpblx.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/022-s_zpsbucbpblx.jpg.html)

A trial making of the first rib.

(http://i1327.photobucket.com/albums/u667/RobertHornby/025_zpscqyoxyjk.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/025_zpscqyoxyjk.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Admiral_dk on September 29, 2016, 11:32:21 AM
That extra work on the inside certainly changed the appearance enormously  :Love:
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on September 29, 2016, 05:24:58 PM
That is quite a transformation Robert!!  Looks great.  Is that Ryobi box in the last picture a new saw perhaps to assist in cutting out the ribs??  ;)

Bill
Title: Re: COLUMBINE - The Boat
Post by: Don1966 on September 29, 2016, 06:46:29 PM
Looks great Robert and the extra work does show your efforts ..... :ThumbsUp:

Bill I believe that's a belt sander.....

Don
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 29, 2016, 11:57:33 PM
Don picket it correctly, I treated myself to an early Xmas present. Cutting all the ribs by hand and sanding them would take me decades. I already have a small band saw so between them the job will be much shorter. I am using recycled decking timber for the ribs but have decided on Teak for the decking and upper woodwork

(http://i1327.photobucket.com/albums/u667/RobertHornby/001_zpspwzbrhnb.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/001_zpspwzbrhnb.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: crueby on September 30, 2016, 12:36:06 AM
Very nice! That sander and the small bandsaw makes a great combination for shaping and beveling the ribs.  On my models I also find a mini block plane handy, have some old violin makers planes for the small curves. I love how the inside of the hull smoothed out, keep it up!
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on September 30, 2016, 12:54:41 AM
Nice new addition Robert :)  Merry Christrmas  :agree:

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on November 20, 2016, 12:53:37 PM
Back from holidays and motivation returned wood shavings are being made once again.
The first rib I made I cut the concave profile from cardboard and trimmed it to get a reasonable fit to the hull. Then using the template I drew the shape with pencil to the timber then bandsawed the wood and finally sanded it to fit the hull. Very time consuming and there has to be a better way of transferring the hull shape to the wood. I few hours of contemplation brought me to a tool I used as a junior draughstman many many moons ago called a flexible french curve, but where to get one was going to be a greater issue. Mr Google provided the answer and via ebay I had my curve for the princely sum of $5-60.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3917_zpsbqgc7y3r.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3917_zpsbqgc7y3r.jpg.html)

The curve was pressed into the hull and then transferred to the wood where I could draw the pencil line ready for cutting.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3918_zpshhr8tzxf.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3918_zpshhr8tzxf.jpg.html)

The band saw made short work of cutting the wood along the line.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3919_zpscyi4nj9b.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3919_zpscyi4nj9b.jpg.html)

The concave profile after the band saw cut.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3920_zps52gocg01.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3920_zps52gocg01.jpg.html)

Next was to fine tune the profile on the disc sander to give the good fit to the hull.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3921_zpsgmz8r588.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3921_zpsgmz8r588.jpg.html)

With the shape good enough the concave profile can be drawn by just following the outer one 6mm away and drawing the end 'TEE' part which will support the decking timbers.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3922_zpsth5iohs2.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3922_zpsth5iohs2.jpg.html)
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3923_zpstw4iuwmd.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3923_zpstw4iuwmd.jpg.html)

More band saw work and sanding sees the rib complete

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3924_zps68etykkb.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3924_zps68etykkb.jpg.html)
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3925_zps4wzrt113.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3925_zps4wzrt113.jpg.html)
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3926_zpsqkl7i4sb.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3926_zpsqkl7i4sb.jpg.html)

I have glued the rib in place with high strength wood adhesive and it does a very good job


(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_3927_zpsvu4wtkgc.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_3927_zpsvu4wtkgc.jpg.html)

Each rib is now only taking about 1 hour to make so with around 24 to go I will be here for a while yet. Each rib will be unique i.e. not two the same.

Robert
Title: Re: COLUMBINE - The Boat
Post by: steamer on November 20, 2016, 02:36:48 PM
The other alternative would be to laminate them from 2 or 3 layers of thinner stock in place against the hull    You could either put some packing tape in first, laminate them, remove the tape and then bond them in, or just glue them in 1 layer at a time.   I would prefer the first method as I could then shape and sand them, and finish them outside the hull like you are now....much less mess and a neater job.

Or you could do it this way.  This is coming along wonderfully!   Either way is consistent with full size practice.

Keep it coming, I like boats!

Dave
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on November 20, 2016, 10:43:59 PM
Thanks for the response Dave, I had considered laminating the ribs as you suggested but decided against it as making the deck support part would not have been so easily done. Also making all the laminate strips would have taken time as well, although time is not really important to us retired folk. Also, I doubt the original boat would have had laminated ribs, but I will take advice from more knowledgeable people than me on this one.
Bob
Title: Re: COLUMBINE - The Boat
Post by: crueby on November 20, 2016, 11:51:14 PM
Full size boats get built with every imaginable method, just like full size and model engines! On simaler size models I've done sawn, laminated, and steam bent frames. Each worked about as well.

Lovely work, watching along...
Title: Re: COLUMBINE - The Boat
Post by: steamer on November 21, 2016, 12:26:29 AM
Thanks for the response Dave, I had considered laminating the ribs as you suggested but decided against it as making the deck support part would not have been so easily done. Also making all the laminate strips would have taken time as well, although time is not really important to us retired folk. Also, I doubt the original boat would have had laminated ribs, but I will take advice from more knowledgeable people than me on this one.
Bob

I used saw cut and laminated construction in my 25' steam launch.   Both are acceptable methods and work very well

Herreshoff used steam bent frames in a mold of the hull pulled up against the ribbands of the mold with the boat built up side down.    If he had Epoxy back then I'm sure he'd a used it.

Dave
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 10, 2017, 07:44:48 AM
Many moons have passed and I have finally completed the ribs  :pinkelephant:
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4539_zps8x0gdea3.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4539_zps8x0gdea3.jpg.html)

The next part will be the floor/base for the boiler and engine. It is my intention to be able to remove the power plant as one item to enable maintenance work outside the hull. I will be fibre glassing the wood supports to the hull and then screwing (M5) the floor to them.
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4540_zpsnpkevtc6.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4540_zpsnpkevtc6.jpg.html)
Robert
Title: Re: COLUMBINE - The Boat
Post by: Ye-Ole Steam Dude on August 10, 2017, 08:19:16 AM

Beautiful workmanship and I will be following along.

Thomas
Title: Re: COLUMBINE - The Boat
Post by: Tennessee Whiskey on August 10, 2017, 10:49:04 AM
Nice to see an update Robert. I hope you haven't been neglecting "my Cobra" during the progress :stickpoke:. Carry on and I'm following.

Cletus
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 10, 2017, 11:20:00 PM
Cletus,
Be assured "your" Cobra is getting the attention it deserves, ie getting out at least fortnightly.
Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on August 11, 2017, 01:28:12 AM
Good to see you back on it Robert. Never done any boat work, model or otherwise, but it fascinates me.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on August 11, 2017, 03:10:16 AM
Couldn't help myself, had to see hoe it looked with the boiler and engine in roughly the right place. As the boiler is quite far forward I am thinking most of the ballast will need to be at the stern. I have calculated that the whole finished boat will need to be around 11kg to achieve the correct water line. I am expecting to add around 2 to 3kg of lead.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4541_zpsrp0dp5uq.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4541_zpsrp0dp5uq.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Ian S C on August 11, 2017, 03:29:09 AM
Robert, If it's going to have radio gear, maybe the placing of the batteries will cover most of the balast problems, with just a bit of lead in the bilge to get the right water line. It's looking good.
Ian S C
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 02, 2017, 11:43:40 AM
I have had a bit of a change of direction with the boat and decided to convert it into a model of an 1890's era aircraft carrier, still some detail to work out.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4542_zpskpey3jiq.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4542_zpskpey3jiq.jpg.html)
Title: Re: COLUMBINE - The Boat
Post by: Ye-Ole Steam Dude on September 02, 2017, 01:09:39 PM

Robert that is a novel idea and this will be an interesting build.

Thomas

Title: Re: COLUMBINE - The Boat
Post by: crueby on September 02, 2017, 01:44:36 PM
The steam engine would still be relevant for the launch catapult!   :ROFL:
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 02, 2017, 11:10:12 PM
Thanks Crueby, great idea, I hadn't thought of a steam catapult. (maybe they weren't around on carriers in the late 17th century.)
Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 07, 2017, 04:32:22 AM
OK the silliness put to bed (obviously fooled no one) the board is to allow the work on the side of the hull to be made much easier and the painting will need to be done with the boat in the capsized position. :ROFL:
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4544_zps91lynvqr.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4544_zps91lynvqr.jpg.html)

I am fixing the rubbing strakes to the sides with 2 pack adhesive and will follow up with brass rivets. A length of rope will be glued to the top face of the strake but larger in diameter.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4545_zpsvztczldx.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4545_zpsvztczldx.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: scc on September 07, 2017, 10:50:52 AM
Beautiful
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 09, 2017, 05:34:39 AM
Prior to painting I need to make all the holes and fit things to them so any adjustments can be made. I fitted the rudder shoe (the screws are temporary as I still have to countersink the holes and get slightly smaller headed screws).The slot is to allow the tiller to pass through the transom where it will be controlled by an actuator/servo.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4549_zpsytckq9le.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4549_zpsytckq9le.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4550_zpsip4aedj3.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4550_zpsip4aedj3.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4548_zpsce6byksw.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4548_zpsce6byksw.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on September 09, 2017, 01:51:53 PM
Very happy to see you back on this project Robert.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 10, 2017, 07:31:26 AM
Thanks Bill, I was never really off it but had a few "gap weeks" during the rib making process. The rudder came together easier than I anticipated with some silver solder on each end on both sides then filled with JB Weld (I dressed the weld up some more after the photo was taken) Some primer on prior to paint. The gland nuts were straight forward, one outside and a second one inside. I only gave a .003" clearance on diameter on each of them and the prop shaft turns very nicely with no binding. I will be using graphited string for the packings.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4551_zpsdfjqspaa.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4551_zpsdfjqspaa.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4553_zpst1kzrlkm.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4553_zpst1kzrlkm.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 16, 2017, 04:21:21 AM
Back to the power module base. I wanted the base to look like corked planking but the smallest slot drill I have is 1/16" and trialing on some scrap wood the corking gap was too wide. I sacrificed a 1mm twist drill Locktightening it into a brass rod and leaving only 3mm protruding. I flattened the end and it worked wonderfully. I only cut 0.35mm deep, enough for a filling of black paint.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Boat%20base%20routing_zpsbmdbwjw0.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Boat%20base%20routing_zpsbmdbwjw0.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4546_zpsxilqmdu0.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4546_zpsxilqmdu0.jpg.html)

After a couple of days to dry and harden I just sanded it all back and gave it a coat of clear Polyeurothane. I made the 8 brass 4BA inserts and glued them in with Araldite.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4555_zpsdkt6dzep.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4555_zpsdkt6dzep.jpg.html)
Title: Re: COLUMBINE - The Boat
Post by: Ian S C on September 16, 2017, 10:25:06 AM
Your caulked deck looks good, the hull is coming along fine.
Ian S C
Title: Re: COLUMBINE - The Boat
Post by: Ye-Ole Steam Dude on September 16, 2017, 10:35:03 AM

Robert that is a great idea and it turned out beautiful.

Thomas
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on September 16, 2017, 01:51:05 PM
Very nice Robert! That turned out beautifully.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 18, 2017, 11:00:31 AM
Couldn't help trial fitting the boiler and engine to see hoe they look in their correct location and also to give the assembly a weight check, which came out to be 9kg. So I mhave around 2 kg left for the fitting out to achieve the correct water line.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4556_zpsijgy5anw.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4556_zpsijgy5anw.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4557_zpszghqwcz8.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4557_zpszghqwcz8.jpg.html)

The next job is to make the universal for the prop shaft. Also the longer brass rivets arrived so I can finish off the timber side strakes.
Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on September 18, 2017, 02:48:14 PM
Most impressive Robert. I always look forward to your updates on this project.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Johno on September 18, 2017, 06:36:42 PM
Robert, very very nice. Do you intend to fit a boiler feed pump, if so engine driven or independently driven?

Ian
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on September 19, 2017, 06:07:16 AM
Thanks Ian and Bill,
I will not be fitting a feed pump into the boat as I don't think I will be able to make one small enough that would do the job to look right within the hull. It is my intention to have a "shore mounted" hand operated pump for boiler filling duties. I calculate that commencing with a full boiler I will get around 10 minutes steaming time before I need to top up. It is my experience from my steam drag saw that observers like to see things happening to keep things interesting. Another aspect of bringing it along side is I can add some engine oil to the motor.
Robert
Title: Re: COLUMBINE - The Boat
Post by: gbritnell on September 19, 2017, 12:40:32 PM
Hi Robert,
Outstanding looking work on your build. I have been quietly following along.
gbritnell
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on November 11, 2017, 11:15:24 PM
The hull is finally painted. The red is a little too red but the colour swatch showed it more like the old Red Lead paint colour. However when it is in the water not too much red will be visible. Next step is fitting out of the deck. I am undecided between Teak or Tasmanian Oak.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Hull%20paint%202017_zpsqnjwmwy6.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Hull%20paint%202017_zpsqnjwmwy6.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on November 12, 2017, 12:19:25 AM
Wow, that is beautiful Robert!! What a nice finish to the hull too. Just amazing.

Bill
Title: Re: COLUMBINE - The Boat
Post by: Dave Otto on November 12, 2017, 02:04:15 AM
Very nice!

Dave
Title: Re: COLUMBINE - The Boat
Post by: Pete49 on November 12, 2017, 03:31:41 AM
Robert just my 2 bobs worth in regard to the timber. Tassie oak can have nice grain but as you probably know is a eucalypt and lighter than teak but may over time split. Teak is a more durable timber used often in boat building though I assume as its a model it won't live out on the water for any length of time so I woud say go for the teak as the cost of decking won't break the bank and I feel looks better on model boats.
Pete
Title: Re: COLUMBINE - The Boat
Post by: Ramon on November 12, 2017, 11:16:50 AM
That's a very impressive finish you have there Robert, and I love the way you tackled those deck planks and caulking too - a great result.

I have just read your last message and will await your next post

Ramon
Title: Re: COLUMBINE - The Boat
Post by: crueby on November 12, 2017, 01:25:59 PM
Another option for decking is Spanish Cedar - it looks a lot like mahogany when varnished, but is much lighter weight, which is important for the deck on a model boat. I've used it on my full sized sailboat, holds up great and is very good looking.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on November 13, 2017, 12:23:17 AM
Thank you guys for the thoughts on the deck timbers, I thinks I will be sticking with my original thoughts of using Teak.
With some assistance from Ramon and his Wide A Wake launch i have drawn up a sketch of the steam valve. The extra length of the steam inlet is for the support bracket.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Scan_20171113_zps8wduxkgh.png) (http://s1327.photobucket.com/user/RobertHornby/media/Scan_20171113_zps8wduxkgh.png.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Ramon on November 13, 2017, 09:33:22 AM
Hello Robert - You've nailed it absolutely on the button - that's exactly as I made mine except, I think, the top cover had a spigot for the O ring. You could have sent the drawing as a PDF I think but whatever I can see it now.

The fit does need to be a good one between case and barrel for best results, I assembled mine with tallow as a lubricant if you can get some.

Just noticed the square for the lever to sit on - If you make this a thread instead and tap the lever, then lock it with a locknut  it becomes infinitely positional - certainly a big help when setting up your servo drive to get the opening/closing in just the right place

Keep it coming - not long now eh

Regards - Ramon
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on November 14, 2017, 12:19:22 AM
Thanks Ramon,
I first thought of threading the spigot and may return to that after reading your comments. And I can easily put a groove in the top plate for the O Ring.
Robert
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on November 14, 2017, 01:38:15 AM
Looking good! Are you going to launch it this (your) summer? Can't wait to see that!!

I like that valve... simple.

Pete
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on November 14, 2017, 11:51:10 PM
Thanks Pete,
There is still quite away to go prior to launching, so no it won't be getting wet this summer. For me it is about the journey rather than the destination. Any way Columbine is now righted and in her dry dock for the commencement of the fitting out. I will be visiting the timber yard tomorrow to check out the Teak. I will make a trial fore-deck out of scrap wood to see how it looks. From the photos of the prototype it seems to have a convex curve to it blending into the side decking which appears to be flat.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4573_zpsosu5k8hb.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4573_zpsosu5k8hb.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4574_zpsel9ttuye.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4574_zpsel9ttuye.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/Columbine-a_zps43ccdef8.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Columbine-a_zps43ccdef8.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: derekwarner_decoy on November 15, 2017, 04:12:02 AM
Robert...before you commit to machining the spool O-ring seal diameter & depth cavities, may be best to consider availability

From your cavity [depth] dimensions, a 6-069 Series [5x1.5] O-ring would technically it, however the diametrical dimensions as shown below don't compute

Another downside is that 6-069 Series in Viton elastomer :happyreader: are not readily available  .....

A rank Standard 2-107 Series [5.23x 2.62] would work with a revision to the depth of the cavity....& are readily available in Viton elastomer

Good luck........... Derek
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on November 17, 2017, 05:46:29 AM
Hi Derek,
I did source the O Rings and sized the valve to suit them. I could not help myself with another picture with the interior re painted and the power module installed.

(http://i1327.photobucket.com/albums/u667/RobertHornby/Col-paint-s_zps0xqroqy5.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/Col-paint-s_zps0xqroqy5.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on November 17, 2017, 04:25:02 PM
Sweet!! Looking good, Robert!!

 :cheers:

Pete
Title: Re: COLUMBINE - The Boat
Post by: bent on November 20, 2017, 08:54:00 PM
What a cool project.  Looking great so far, Robert!  :popcorn:
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on December 10, 2017, 04:34:20 AM
I managed to locate some Teak from a fellow "Men's Shed" member. It was from old furniture which had been dismantled. I cut some up and laminated them together as I plan to do with the decking and then applied some clear polyurethane lacquer. The colour of the Teak was much darker than I would like so I tried the same test with Tasmanian Oak and I am much happier with it's colour. 

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4576_zps5xf8setl.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4576_zps5xf8setl.jpg.html)
This is the Teak as given to me.


(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4577_zpsbjiiyezu.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4577_zpsbjiiyezu.jpg.html)
Cutting the oak into 8mm strips.


(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4580_zpsplxkg5au.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4580_zpsplxkg5au.jpg.html)
Milling down the strips to 6.4mm thickness


(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4583_zpsvvy4zz6d.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4583_zpsvvy4zz6d.jpg.html)
Gluing together.


(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4582_zpsevptfksy.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4582_zpsevptfksy.jpg.html)
(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4579_zpsxsxnpdyj.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4579_zpsxsxnpdyj.jpg.html)
A trial piece of the fore deck knocked up from scrap wood, mainly to see how I was going to make the finished item. The deck has a pronounced convex shape to it, so some hand work will be in order here.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 29, 2018, 09:01:50 AM
The decking is progressing quite well and going according to plan, though slowly due to other non workshop jobs.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4613_zpspufs8zen.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4613_zpspufs8zen.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4616_zpszkkvtqyw.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4616_zpszkkvtqyw.jpg.html)

I made my own disc sander for fine dressing of the edges. I was unable to find one at the hardware store.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4617_zpsfnayh08a.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4617_zpsfnayh08a.jpg.html)

And gluing the outer dress edge.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4622_zpsgixy95ix.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4622_zpsgixy95ix.jpg.html)

And now for the brain stretching to work out how to clamp the final 150mm of edging.

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4623_zpswz16dhkk.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4623_zpswz16dhkk.jpg.html)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Jasonb on June 29, 2018, 09:09:13 AM
Just bandsaw a caul to go on the opposite side that follows the curve of the hull and then cut notches in it to take your clamps, holes would also work, I'd also use a caul on the other side to protect the strip from clamp marks.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on June 30, 2018, 12:52:32 AM
Thank you Jason, that solution looks great and I will use it. The outer edges of the trim still have to be dressed level with the hull so any clamp marks will not be a problem.
Robert
Title: Re: COLUMBINE - The Boat
Post by: crueby on June 30, 2018, 12:58:10 AM
I've had similar issues clamping the sheer boards on full size boats - if the boards are dense enough, you can also run a small nail or pin or two at the inside edge of of a wedge, the pin digs into the wood to keep the clamp from sliding. On softer woods, the method Jason describes is a great one.
 :popcorn:
Title: Re: COLUMBINE - The Boat
Post by: Ramon on June 30, 2018, 08:30:58 AM
Hi Robert - getting closer and looking real good  :ThumbsUp:

'Caul' is a new word to me Jason but I know what you mean. I found Robert, if you insert a folded piece of abrasive paper, abrasive sides outwards, between said clamp pieces and work that really helps enhance the grip too.

Not too long now I guess before that sees the water eh ? :)

Regards - Ramon
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on July 02, 2018, 07:24:31 AM
Following Jason's suggestion of the clamping method I knocked a rough Caul and it worked beautifully  :cartwheel: :pinkelephant:

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4627_zpspubtibvf.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4627_zpspubtibvf.jpg.html)

 (http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4624_zpsqe8ncgqj.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4624_zpsqe8ncgqj.jpg.html)

(http://i1327.photobucket.com/albums/u667/RobertHornby/IMG_4625_zpszkoqmeyz.jpg) (http://s1327.photobucket.com/user/RobertHornby/media/IMG_4625_zpszkoqmeyz.jpg.html)

Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on January 23, 2019, 01:42:18 AM
Sorry about the long time since my last update. I have (amongst other things) changed the photo hosting. So this is really a test for me to see if it worked. I am continuing with the decking and just steamed some wood to bend it to shape.
(http://i63.tinypic.com/121ps9g.jpg)
If this works for me then I can post some more.
Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on January 23, 2019, 02:19:34 AM
It worked fine and nice to see an update on the project!!

Bill
Title: Re: COLUMBINE - The Boat
Post by: crueby on January 23, 2019, 02:27:47 AM
Nice!  Clamping the coaming near the bow is always tricky.




 :popcorn:
Title: Re: COLUMBINE - The Boat
Post by: 10KPete on January 23, 2019, 05:10:34 AM
I wondered where you were! Missed your postings on the boat. Great to see you going on..

 :cheers:

Pete
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on January 24, 2019, 01:02:32 AM
More clamping for the timber vertical inboard planking. I had to buy a few more small "G" clamps (the Reject shop has them for a very good price) Gluing make a nice change from silver soldering as you have time to adjust the materials to exactly close where you want them.
(http://i68.tinypic.com/4qq81s.jpg)
Robert
Title: Re: COLUMBINE - The Boat
Post by: Ramon on January 24, 2019, 10:32:50 AM
Good to see you back on the boat Robert - it's coming on now  :ThumbsUp:

Tug
Title: Re: COLUMBINE - The Boat
Post by: bent on January 24, 2019, 06:28:27 PM
Looking good :)
Title: Re: COLUMBINE - The Boat
Post by: Oldboy on January 24, 2019, 10:34:39 PM
Looking good Robert.  Glad your back with the updates, I have been following.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on February 06, 2019, 04:38:04 AM
Continuing on with the coaming with lots of gluing and sanding, it is slowly coming together. I am not working on this project quite as much as I would like due to other stuff in my life and sometimes it is a few months of inactivity. It is around 5 years since I commenced this model, starting with the engine, so probably a lot longer than it takes to build a full sized cruise ship. Any way I still enjoy the challenges of operations I have not attempted before especially in fibre glassing and woodwork.
(http://i64.tinypic.com/10rkg37.jpg)

The coaming is complete and I am pleased with the result, the wood grain will show up more with the varnish/oil coating when all the woodwork is complete.

(http://i64.tinypic.com/200znk7.jpg)

The stern deck has to be easily removalable to access the steering gear.

(http://i63.tinypic.com/2w5o7eh.jpg)

A start has been made on the cabin and here I am milling/routing the curved window tops on my home made rotating table.

(http://i65.tinypic.com/dfbp7m.jpg)

The cabin sides are fabricated with 3.5mm thick Oak and glued together.
Title: Re: COLUMBINE - The Boat
Post by: steamer on February 06, 2019, 04:45:35 AM
Boats always take longer to build than you would think.   Its the passion that keeps you going when life gets in the way.
Looking good!
Title: Re: COLUMBINE - The Boat
Post by: Ramon on February 06, 2019, 08:45:12 AM
Looking good Robert, coming together now  :ThumbsUp:

Dave's right but it's all worth in when it finally touches the water  :ThumbsUp:

Regards - Tug
Title: Re: COLUMBINE - The Boat
Post by: steamer on February 06, 2019, 11:39:02 AM
Looking good Robert, coming together now  :ThumbsUp:

Dave's right but it's all worth in when it finally touches the water  :ThumbsUp:

Regards - Tug

.....That's what kept me going for 13 years.....
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on February 06, 2019, 12:49:05 PM
Looking terrific Ramon. I am with you however long it takes!!

Bill
Title: Re: COLUMBINE - The Boat
Post by: bent on February 06, 2019, 06:19:27 PM
Looking good.  Getting closer to being on the water, it seems?
Title: Re: COLUMBINE - The Boat
Post by: Maryak on February 06, 2019, 09:41:40 PM
Boats always take longer to build than you would think.   Its the passion that keeps you going when life gets in the way.
Looking good!


 :ThumbsUp: :ThumbsUp: :ThumbsUp:
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on February 13, 2019, 12:15:16 AM
Thanks guys for looking in, I am now moving on to the front doors having sourced some tiny brass hinges from the net. My local hardware store (Bunnings) has a very good selection of the Tasmanian Oak in lots of sections which suit me very well. I still have to machine the frames down to the correct size but there is minimum waste. I will rebate the areas for the windows on the drill/mill as well as the solid lower panel.

(http://i67.tinypic.com/2web4b9.jpg)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Don1966 on February 13, 2019, 02:07:25 AM
Beautiful wood work Robert and l do love wood work. To make joints look like they are precision cut,  I put glue in them then sand over the glue the saw dust fills the joint and makes it look flawless! Just saying!

 :cheers:
Don
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on February 16, 2019, 03:18:50 AM
Routing out the door frames for the windows and lower infill panels is made easy on the mill.

(http://i66.tinypic.com/169f4b4.jpg)

In order to achieve square ends on small section timber I initially utilised the "gate" as supplied with the sanding m/c. However to set it exactly is time consuming and there is slop in the guide. So "as you do" an upgrade was deemed to be required. I milled out the slot in the table to be parallel with square sided (the original slot was quite rough as it was cast in.) and made my own guide with improved precision. Also I drilled and taped an M5 into the slot so that  I can clamp the guide and not have to hold it with one hand as was necessary with the plastic one. Of course the original guide is still useful for working with angles.

(http://i63.tinypic.com/sm3p6e.jpg)

The original plastic guide.

(http://i64.tinypic.com/ve3bee.jpg)

My version with added precision.
Title: Re: COLUMBINE - The Boat
Post by: fumopuc on February 17, 2019, 05:57:09 PM
Hi Robert, impressive wood work. I like the door.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on February 18, 2019, 04:52:38 AM
Thanks Achim,
I have made some progress with the frame work. As the cabin is not parallel in either vertical, length and width there is a lot of shaving of the timber to get close fits. But I am happy enough with what I have managed. My sanding machine is worth its weight in gold (well not quite as it is fairly heavy) and gets lots of use.

(http://i63.tinypic.com/29kt6w3.jpg)

Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on February 28, 2019, 11:33:17 PM
The cabin framework and doors have their windows fitted (a type of perspex). So just some more light sanding and then assembly. The roofs will then go on and that will complete the cabin. It will not be fixed to the hull as it has to lift off to access the gas bottle and the forward gland for the prop shaft.

(http://i66.tinypic.com/2h6zyub.jpg)

Robert

Title: Re: COLUMBINE - The Boat
Post by: gbritnell on March 01, 2019, 10:18:23 AM
The boat is coming along very nicely Robert.
gbritnell
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on March 01, 2019, 02:05:07 PM
These details will add even more to this already exceptional launch. Thanks for the detailed pictures of the cabin progression.

Bill
Title: Re: COLUMBINE - The Boat
Post by: bent on March 01, 2019, 07:23:14 PM
Can't wait to see it all together!  Keep up the good work Robert. :popcorn:
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on March 17, 2019, 02:57:02 AM
The cabin is slowly coming together, I procrastinate quite a lot before gluing bits together having to commit and that there is no more work necessary as it may me difficult after gluing. The deck heads (roofs) are next, and they will,be quite tricky as not only do they taper from the front to the stern but also have a significant change of angle. I have thinned down some wood to 2.5mm and it should able to give me the twist I need.  :thinking:

(http://i68.tinypic.com/2d8l1rk.jpg)

(http://i63.tinypic.com/apjurd.jpg)

(http://i68.tinypic.com/2hrfww2.jpg)

Robert
Title: Re: COLUMBINE - The Boat
Post by: b.lindsey on March 17, 2019, 11:58:38 AM
That is all fitting together very well Robert. The roof will only all  the more to it. Looking forward to that part as well.

Bill
Title: Re: COLUMBINE - The Boat
Post by: stevehuckss396 on March 17, 2019, 09:41:08 PM
I have been quietly following along but I have to say I am really enjoying this thing come together. What I like is the fact that it's not just another speed boat. It's going to look so cool after the running gear is installed. Great job so far and I am silently waiting to see the complete model.
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on March 18, 2019, 10:45:55 AM
Thanks Bill and Steve, I had a look back on my photo log book of the build and it is now over 5 years since I commenced with the engine. So I guess this can be called a long time project. But as I imagine many of the projects on this site are also long term. I enjoy very much the building of the motor, boiler and hull and look at it a a journey stretching the grey matter on many occasions. It will probably be next year before it is finished and launched.
Robert
Title: Re: COLUMBINE - The Boat
Post by: Robert Hornby on March 19, 2019, 12:46:28 AM
With the forward end of the side roofs glued I then had to figure out how to clamp the aft ends. There is no way in this world to fix a clamp to at the lower section. I thought of setting the whole boat over at an angle and using weights but that was fraught with danger so as the roof will be coated with a solid white paint I decided to just screw it down until the glue set then remove the screws. Then fill the holes with a dowel (2mm dia.) and no one will know except me and those looking on my blog.

(http://i67.tinypic.com/4lhvy8.jpg)

(http://i63.tinypic.com/351uyxv.jpg)

(http://i63.tinypic.com/9qh2f9.jpg)

Robert
Title: Re: COLUMBINE - The Boat
Post by: crueby on March 19, 2019, 12:48:55 AM
Good solution, thats quite a twist to the roof to hold against. Coming along great!
 :popcorn: :popcorn: :popcorn:
Title: Re: COLUMBINE - The Boat
Post by: Don1966 on March 19, 2019, 12:51:34 AM
Some great brown work with great results...... :praise2:


 :cheers:
Don
Title: Re: COLUMBINE - The Boat
Post by: Art K on March 19, 2019, 01:19:40 AM
Robert,
The boat is coming along nicely. Very good work with the brown stuff. I did have trouble with my mill after working on the base for Val. It caused a problem with the computer, due to the dust. :zap:
Art