Model Engine Maker

Supporting => Tooling & Machines => Topic started by: Arbalest on September 30, 2012, 12:32:50 PM

Title: New Tool Holder
Post by: Arbalest on September 30, 2012, 12:32:50 PM
I've made a couple of these now and finally I have one I like!

It was hidden inside this block of steel ...

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1704.jpg)

But a few hours on the Mill coaxed it out  :naughty:

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1711.jpg)

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1710.jpg)

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1708.jpg)

Perhaps a little larger than originally intended and weighing a little over a pound it's quite a lump but fits my 4" BV20 nicely.
Tangential tools can't do everything but are really cheap to run using any small lumps of HSS, round or square that may otherwise lay unused.
Title: Re: New Tool Holder
Post by: steamer on September 30, 2012, 12:45:29 PM
I like that alot Arbalest!   

Dave
Title: Re: New Tool Holder
Post by: AussieJimG on September 30, 2012, 12:58:42 PM
That tool holder is a work of art.

Jim
Title: Re: New Tool Holder
Post by: swilliams on September 30, 2012, 01:09:25 PM
Very nicely done Arbalest

Steve
Title: Re: New Tool Holder
Post by: Don1966 on September 30, 2012, 01:31:16 PM
Beautifully made Arbalest! Looks factory made. Do you bead blast it to get that finish?

Don
Title: Re: New Tool Holder
Post by: Arbalest on September 30, 2012, 01:35:37 PM
Not beads Don, Alox grit. But yes, it's blasted!
Title: Re: New Tool Holder
Post by: Firebird on September 30, 2012, 01:47:01 PM
Hi

Excellent, much better than my effort. I must look out for a lump of steel I can make one from

cheers

Rich
Title: Re: New Tool Holder
Post by: Arbalest on September 30, 2012, 02:14:44 PM
Thanks Guys. Final pic showing the clamp in case anyone wondered!

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1715.jpg)
Title: Re: New Tool Holder
Post by: Jo on September 30, 2012, 05:39:06 PM
Very nice :ThumbsUp:

Jo
Title: Re: New Tool Holder
Post by: RMO on October 01, 2012, 03:31:46 AM
That looks great!  Did you make it up as you went along or did you have a set of drawings to work from?  Either way it is beautiful.

Mike O
Title: Re: New Tool Holder
Post by: ReFlad on October 01, 2012, 03:41:45 AM
Very Nice!  Is it CNC'd?  Looks great.  I'm sure it works well too!

Ronald
Title: Re: New Tool Holder
Post by: Arbalest on October 01, 2012, 08:14:27 AM
No drawings sadly, I just milled it as I went along!
Title: Re: New Tool Holder
Post by: JFK on October 01, 2012, 10:10:51 AM
That looks very nice. Show us the grinding jig then  :LickLips:
Title: Re: New Tool Holder
Post by: Arbalest on October 01, 2012, 11:51:58 AM
There you go!

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1688_zps994912ea.jpg)
Title: Re: New Tool Holder
Post by: JFK on October 01, 2012, 06:05:39 PM
Thank you. My to do list is getting awfully long now.
Title: Re: New Tool Holder
Post by: Chris J on May 07, 2013, 08:28:26 PM
There you go!

(http://i230.photobucket.com/albums/ee286/Arbalist/IMGP1688_zps994912ea.jpg)

What is the make of this sander pls ?

I find myself in need of one
Title: Re: New Tool Holder
Post by: Arbalest on May 07, 2013, 09:16:55 PM
Hi Chris, it's a modified Record BDS 250. The standard belt size is 150mm wide but I've fitted an auxiliary platen to use 50mm wide belts. I also had to fabricate a proper table for the belt, the disc one is good as standard.

(http://i230.photobucket.com/albums/ee286/Arbalist/_IGP2936.jpg)
Title: Re: New Tool Holder
Post by: Chris J on May 07, 2013, 11:12:13 PM
Hi Chris, it's a modified Record BDS 250. The standard belt size is 150mm wide but I've fitted an auxiliary platen to use 50mm wide belts. I also had to fabricate a proper table for the belt, the disc one is good as standard.


I thought it might be a Record due to the colour but the table threw me of the scent.

It's a bit large for me, I just need a small bench top model with a half decent table.

Thanks
Title: Re: New Tool Holder
Post by: zeeprogrammer on May 08, 2013, 12:06:15 AM
This raises a couple of questions for me...

I see that you are using a belt sander to (I take it) sharpen the tool rather than a grinding wheel.
Is a belt sander preferred? Or is it a matter of convenience?
Can a belt sander be used to shape as well? (I suspect that's not advised but I don't know.)
I've done precious little with the grinder I have...I really need to improve my skill in making/sharpening cutting tools.

What kind/grade of grit?

Thanks
Title: Re: New Tool Holder
Post by: Russel on May 08, 2013, 03:02:13 AM
I'm with Zeeprogrammer, his post took the words right out of my mouth. I've experimented with some small grinding stones in the drill press and a home made jig to hold high speed steel bits for sharpening and shaping, but I wonder if sanding, with a proper machine, would be better.

Up to this point, I use carbide bits in my little lathe. But, it is clear that there is a lot more that I could accomplish with high speed steel bits. Another aspect of machining that I machining that I have neglected. I have wondered if I should get a good grinder for sharpening high speed steel bits, or would a small belt sander be better?

By the way, that is one beautiful tool bit holder that you made!
Title: Re: New Tool Holder
Post by: sco on May 08, 2013, 08:12:57 AM
There's a couple of good reads on this web site that got me started sharpening stuff with a belt sander,

Here;

http://www.machinistblog.com/modifying-a-craftsman-2-x-42-inch-belt-sander-for-tool-grinding/ (http://www.machinistblog.com/modifying-a-craftsman-2-x-42-inch-belt-sander-for-tool-grinding/)

Ad here;

http://www.machinistblog.com/grinding-lathe-tools-on-a-belt-sander/ (http://www.machinistblog.com/grinding-lathe-tools-on-a-belt-sander/)

Simon.
Title: Re: New Tool Holder
Post by: Chris J on May 08, 2013, 09:46:28 AM
I am having a small love affair with my diamond tool holder at the moment.

Certainly worth a look fellas.

http://www.eccentricengineering.com.au/index.php?option=com_content&view=article&id=2&Itemid=17
Title: Re: New Tool Holder
Post by: Arbalest on May 08, 2013, 10:35:02 AM
This raises a couple of questions for me...

I see that you are using a belt sander to (I take it) sharpen the tool rather than a grinding wheel.
Is a belt sander preferred? Or is it a matter of convenience?
Can a belt sander be used to shape as well? (I suspect that's not advised but I don't know.)
I've done precious little with the grinder I have...I really need to improve my skill in making/sharpening cutting tools.

What kind/grade of grit?

Thanks

I got the idea from this Carl:

http://www.robert-sorby.co.uk/proedge.htm

As I already had the Record sander I set about the modifications to use it for both woodworking/turning tools and sharpening HSS bits for the metal lathe and mill. I use grits from 80-200 generally. You can use it for any stock removal but you must clean out any wood dust before going back to grinding metal DAMHIKT. The important part to remove from any belt sander if you want to use it for tool sharpening is the graphite backing fitted to the platen on many units. This material is soft and will deform as tools are pressed against the belt. I simply replaced it with mild steel and it's working fine so far.
Title: Re: New Tool Holder
Post by: zeeprogrammer on May 08, 2013, 12:05:31 PM
Thanks all. This was very useful to me.

One of the links talked about a wax lube. What form does that take? A stick? How is it applied and how much?
Title: Re: New Tool Holder
Post by: Arbalest on May 08, 2013, 12:26:32 PM
Thanks all. This was very useful to me.

One of the links talked about a wax lube. What form does that take? A stick? How is it applied and how much?

I don't know as I've never used it myself.
Title: New Tool Holder
Post by: ths on May 08, 2013, 01:02:46 PM
Chris,

I had one arrive this week, and I know how you feel. The finish is superb. I think I accidentally sharpened a piece of HSS that gave me this result some years ago, but this is no accident, and I can keep sharpening it.
(http://i1292.photobucket.com/albums/b569/hugh6540/7374d6ca2761cb9bdfde8acd9d37622c_zpsfcd7d318.jpg)


Hugh.

PS: I'll figure out the photo thing, I promise.
Title: Re: New Tool Holder
Post by: Arbalest on May 08, 2013, 03:20:16 PM
This might do the job Chris?:

http://www.machinemart.co.uk/shop/product/details/clarke-cs4-6d-belt-and-disc-sander
Title: Re: New Tool Holder
Post by: sco on May 08, 2013, 03:42:31 PM
This is the one I went for;

http://www.toolstop.co.uk/metabo-bs-175-175mm-bench-grinder-240v-p14071?gclid=CLOYmOXehrcCFUzHtAodawIAgA (http://www.toolstop.co.uk/metabo-bs-175-175mm-bench-grinder-240v-p14071?gclid=CLOYmOXehrcCFUzHtAodawIAgA)

Only downside so far is the belt size is a bit odd so it's Metabo belts or make your own.

Simon.
Title: Re: New Tool Holder
Post by: Chris J on May 08, 2013, 05:24:00 PM
This might do the job Chris?:

http://www.machinemart.co.uk/shop/product/details/clarke-cs4-6d-belt-and-disc-sander

Perfect, one is winging it's way to me as we speak  :NotWorthy:

Thanks
Title: Re: New Tool Holder
Post by: Arbalest on May 08, 2013, 06:22:52 PM
Be careful which belts you buy for it. In the past all belts were "scarfed", meaning they had an overlapping joint which causes a bump every time the joint comes round. You can still get these but avoid them in favour of butt joined belts. These have a taped joint and work much better.
Title: Re: New Tool Holder
Post by: Chris J on May 08, 2013, 08:42:21 PM
Be careful which belts you buy for it. In the past all belts were "scarfed", meaning they had an overlapping joint which causes a bump every time the joint comes round. You can still get these but avoid them in favour of butt joined belts. These have a taped joint and work much better.

That makes sense ? Any recommended supplier ?

Title: Re: New Tool Holder
Post by: Arbalest on May 08, 2013, 09:20:31 PM
Not really, I haven't bought any for quite a time.
Title: Re: New Tool Holder
Post by: Chris J on May 10, 2013, 10:24:56 PM
Be careful which belts you buy for it. In the past all belts were "scarfed", meaning they had an overlapping joint which causes a bump every time the joint comes round. You can still get these but avoid them in favour of butt joined belts. These have a taped joint and work much better.

The machine arrived this morning and look like it will do the job very well.
The belts are taped and I really can't feel the join so I'm very pleased.
The belt changeover will be easy too.
Next move is to see what grit grades I can get.
Thanks for the tip.
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