Author Topic: Steam engine (Tiny horizontal double acting, maybe with reverse)  (Read 23524 times)

Offline gbritnell

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Steam engine (Tiny horizontal double acting, maybe with reverse)
« on: November 03, 2012, 07:44:44 PM »
Gentlemen,
One more engine in the 'Tiny' series. This time a horizontal version. I might even make it with a reverse mechanism. There was no way to cut the entire base from one piece so I layed out the base to see how I could make it in 2 pieces and still have it look like a casting, or 1 piece. By cuttting a slot in the base and recessing the side wall of the cylinder a little for it to overhang the top surface it almost looks like one piece. The cylinder is mounted with 2, 0-80 socket head screws from underneath.
gbritnell
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Offline Jo

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #1 on: November 03, 2012, 07:48:50 PM »
Wow George  8),

I am following this with great interest.

Jo
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Offline rebush

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #2 on: November 03, 2012, 08:11:04 PM »
George: Nicely done on such a small scale. Will be following along also. Thanks for posting your build. Roger
Hopelessly lost but making darn good time.

Offline zeeprogrammer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #3 on: November 03, 2012, 08:34:44 PM »
I'll be watching too.
Is that cloth 1 or 2 tpi?
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Offline Don1966

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #4 on: November 03, 2012, 09:11:59 PM »
Count me in on this one also George. I am pulling up a chair.

Don

Offline ScroungerLee

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #5 on: November 03, 2012, 09:13:41 PM »
 Oooh a new gbritnell project!  Cool!

Looking forward to more George.

Lee
Mmmmm.... Shiny!

Offline Bearcar1

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #6 on: November 03, 2012, 10:53:38 PM »
I do so much envy your eyesight, George. Wow, is all I can say.  :ThumbsUp:


BC1
Jim

Offline b.lindsey

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #7 on: November 03, 2012, 11:28:26 PM »
Have to agree with Jim, my eyes are strained just looking at the pictures. Another great project though George...you are on a roll!!!
Bil

Offline ProdEng

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #8 on: November 04, 2012, 01:08:46 AM »
Enjoy watching your progress with your tiny engines and seeing what is possible at such a small scale.
Jan in Perth

Offline Bezalel

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #9 on: November 04, 2012, 08:08:06 AM »
George


Your an inspiration.    :agree: :agree:


 I only wish I could achieve machining little parts like that.


  Alas! I fear I would be forever loosing them in the scratches in my bench top.


Thank you for sharing


Bez
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Offline NickG

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #10 on: November 04, 2012, 11:23:46 AM »
Brilliant - and I was joking when I mentioned a horizontal in the other thread!

Some of the horizontal castings I've noticed do have 2 base castings anyway.  :ThumbsUp:

Offline Captain Jerry

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #11 on: November 04, 2012, 12:37:32 PM »
That is amazing, George.  I like the cylinder mounting solution.  I can't imagine how you achieved the external curves with the ball end mill. Did you crank that in by eye, set up a pivot, or do it on an RT?  Is it magic? Or can you show us?

Jerry
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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #12 on: November 04, 2012, 12:45:04 PM »
Geez George!   I know how big a Schrader valve cap is!.........WOW!!!!!


 :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy:

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #13 on: November 05, 2012, 01:20:12 AM »
Gentlemen,
Here's today's update. I started on the cylinder. At first I thought ok, just another one of many but then I decided to make this one look like a casting instead of smooth like it had lagging on it. I started by turning  a piece of stock to get a true cut on the outside and boring the the cylinder bore.
From there the stock was moved to my dividing head. The trued up od. gives me a good surface to indicate and measure from. The valve face was cut first followed by milling off the radius by taking small steps.
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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #14 on: November 05, 2012, 01:23:00 AM »
The next steps were center drilling with a 00 center drill and drilling the appropriate holes for the valve chest holes and the ports.
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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #15 on: November 05, 2012, 01:27:50 AM »
Now comes the fun part. I made a layout of my stop points to create the recessed area leaving the drain cock and exhaust port bosses. I then went in with a .094 diameter ball end mill and started stepping the metal away. The cuts were stepped over at .012 until I reached the inside edge of the bosses. From there I started stepping around the bosses until I got to the stop dimension leaving the flange for the heads.
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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #16 on: November 05, 2012, 01:38:27 AM »
Wow George!   How do you organize a job like that?
Do you have the dimensions laid out on a reference table and you step it off?
Can you show us how you work that magic?
 :NotWorthy: :NotWorthy: :NotWorthy:

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #17 on: November 05, 2012, 01:39:02 AM »
I then remounted the stock in the lathe and cut the cylinder free from the bar. I always leave a couple of thousands on the face in case the cutoff operation raises a burr and needs to be cleaned up. This one went smoothly and all that was needed was a little filing to get it to size. The ports were drilled and then I used a sharp hobby knife to clean up the small radii left from drilling. It looks ragged in these pictures but you have to realize the intake port is only .03 high so the photo exaggerates what you see. Likewise for the bore, it will be polished when all the final porting is drilled. A little more work with a polishing stone to remove the tool marks and it will look just like a casting.
gbritnell
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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #18 on: November 05, 2012, 01:42:58 AM »
Hi Dave,
Like I mentioned earlier, I have a drawing program on my computer so I draw the cylinder and develop all my tangent points for a particular sized cutter. In this case it was an .094 ball mill. I marked my dividing head for the radial stop points on each side of the bosses and at the extreme ends around the exhaust ports. It's a lot of work but it sure makes it look more interesting than just a smooth surface like the previous engines.
gbritnell
Talent unshared is talent wasted.

Online steamer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #19 on: November 05, 2012, 01:47:17 AM »
Thanks George!

I'm going to go for that ....I want to learn to do that.

I think that is a skill I want to learn...even if it's only half as good as you!

 :NotWorthy: :NotWorthy: :NotWorthy:

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Don1966

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #20 on: November 05, 2012, 02:01:21 AM »
Wow! George you and Jason make it look so easy, and I know it is not as easy as it looks. You really need to write a book on your techniques. That is some awesome bit of work on a small scale. I like! Just keep those photos coming.

Don

Offline ProdEng

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #21 on: November 05, 2012, 10:52:51 AM »
Very helpful to see how it is done, thanks.  Despite understanding that machining is the relentless application of logic, at times it still appears to be magic :)
Jan in Perth

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #22 on: November 07, 2012, 01:17:49 AM »
With the previous engines being the vertical type the crankshaft is semi hidden inside the column. With this engine the crankshaft is out in the open so it needed a little detailing. To remove the extra stock to make the counterweights I needed a fixture, a small fixture. I took a small block of aluminum, drilled it through .089 diameter, drilled and tapped 2-56 for retaining screws and removed the unwanted material. I then used a .010 slitting saw to cut the retaining caps free. I left a small island of stock to support the crank pin. This would also keep the crank perfectly horizontal for nice square cuts. The pictures are deceiving in that the cutter I'm using to cut the counterweights is only .062 diameter.
gbritnell
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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #23 on: November 07, 2012, 01:21:06 AM »
In the first picture it's hard to tell how small the 2 parts are so I took another shot on a penny to give the relative size. They're small!
gbritnell
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Offline tvoght

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #24 on: November 07, 2012, 01:36:01 AM »
I think this is going to be my favorite of the tiny series. But who's to know what comes next? Thanks, George.

--Tim

Offline zeeprogrammer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #25 on: November 07, 2012, 03:06:07 AM »
Gee whiz George. Talk about a nano-engine.
What's the size of the bolts on the control rod?
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Offline Don1966

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #26 on: November 07, 2012, 03:06:38 AM »
Gee! I never realized how small they were looking at the penny. I know this is going to be my favorite tiny.
You are a master George.

Don

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #27 on: November 07, 2012, 03:33:49 AM »
All the bolts are M1x.25. To scale they could be a little smaller but this size tap is my bottom limit.
gbritnell
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Offline Jo

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #28 on: November 07, 2012, 07:19:14 AM »
In the first picture it's hard to tell how small the 2 parts are so I took another shot on a penny to give the relative size. They're small!

Small  :o does not really describe it.  :NotWorthy: :NotWorthy:

It is just amazing. 1mm is plenty small enough to go with threads. 8)

Jo
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Offline ProdEng

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #29 on: November 07, 2012, 11:19:17 AM »
I love the fixture for machining the crank, sometimes you just have to make some tooling to get a job done.
Jan in Perth

Offline ScroungerLee

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #30 on: November 07, 2012, 01:02:41 PM »
"took a shot ON a penny".  Wow!  That makes those 2-56 screw heads look giant.

As always you have fantastic pictures.  macro mode for the win!
Mmmmm.... Shiny!

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #31 on: November 13, 2012, 02:19:34 AM »
I decided to try and make a governor for this engine. I made up the drawings and figured I would see if I could cut the set of miter gears first. The diametral pitch is something like 128. The width of the cutter is .008 at the bottom and .012 at the top. The full depth of the tooth is .016. The gear has 15 teeth and the O.D. is .112.
The gears came out looking reasonable although even with my extra powerful headband magnifier it's still hard to see the teeth.
The gears will get pressed onto a stainless shaft.
I also started on the mounting column for the governor. It's hard to give a size comparison for these tiny parts. Even the penny doesn't give a good idea of how small they are.
Somewhere in my box of plastic modeling supplies I found a piece of .03 vinyl tubing. I used a piece of stretched sprue as a core for the tubing and super glued it together. I gave it about 5 minutes and then proceeded to give it a tug. I was pleasantly surprised that it stayed together so that will be my drive belt. I will have to make up a new eccentric with a combined pulley for the belt.
gbritnell
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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #32 on: November 13, 2012, 02:27:16 AM »
 :o


YUP ....Marv.......time to put the other side of the shop on the fire....

 :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy:

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline zeeprogrammer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #33 on: November 13, 2012, 02:36:55 AM »
I'll just quietly pack up my kit and donate to charity.

That's awesome George.
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Offline Don1966

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #34 on: November 13, 2012, 02:55:10 AM »
Gee! Georgeyou are putting us all to shame. That is one set of tiny gears, awesome! :praise2:
Does anybody want to buy some equipment? I think I'll go back to doing electrical work.  :noidea:

Don

Offline V 45

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #35 on: November 13, 2012, 03:10:53 AM »
I think your "TINY" is great work !!!  :praise2: I like the penny idea a lot !! Shows how really "TINY" it's going to be. Those gears...just WOW !!!   :cartwheel:
  Dave
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Offline ths

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #36 on: November 13, 2012, 04:19:42 AM »
George, the planning and plotting for these pieces seems extraordinary, the execution of all that preparation, at such a scale, is exemplary. Really well done!

Hugh.

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #37 on: November 13, 2012, 10:14:54 AM »
The build quality and planning that goes into these is just mind boggleing....They're Exquisite!

 :praise2: :praise2: :praise2:
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline ScroungerLee

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #38 on: November 13, 2012, 02:27:19 PM »
Amazing gears!  What did you use for a cutter?  Sorry if you said and I missed it somehow.

Lee
Mmmmm.... Shiny!

Offline Jo

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #39 on: November 13, 2012, 02:58:57 PM »
And I struggled with some 32DP bevel gears. Amazing  :NotWorthy:  :NotWorthy:

Jo

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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #40 on: November 13, 2012, 04:58:10 PM »
Hi Lee,
I made one up. I layed out the shape of the tooth in my drawing program and cut it onto a piece of drill rod. The width of the tooth at the root went from .008 to .012 so I split the difference at .010. I cut the angle of the tooth from that dimension. I figured something that small wouldn't need a curve to it. I then hardened the blank and then ground the flutes into it with a small cut-off wheel in my Dremel grinder. I used a diamond hone to put a little clearance onto the side of the flutes. All this was done with my magnifier. I figured once I got the gears cut it they were a little too fat I could run them in with a little diamond lapping compound.
gbritnell
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Offline NickG

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #41 on: November 13, 2012, 05:12:58 PM »
WOW! :cartwheel:

Offline Captain Jerry

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #42 on: November 14, 2012, 01:14:25 AM »

Come on George. Is that the best you can do?  They are still visible! :ThumbsUp: :ThumbsUp:
NOTARY SOJAK

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #43 on: November 14, 2012, 01:26:52 AM »
 :lolb: :lolb:

Well, you can't see them, but if you could you'd see  .000000000004 DP 126 tooth hypoid gears made of 89Rc titanium cultivated from the frass of adolecent trolls who grew up in the black forest of transylvania...

Now if  " I" posted that I would be laughed at....but if GEORGE posted it....we'd all be grabbing the microscopes!

Because....THAT would be exactly what George would have made!

George, I can't possibly explain how each and every time you blow me away....with your effort, you skills, your talent and your determination.

Words and superlatives are just so completely...absolutely!  inadequate!

As a member of this forum, and a fellow human being....you have my highest respect sir!

 :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2: :praise2:
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline sbwhart

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #44 on: November 14, 2012, 07:10:46 AM »
Double WOW  :ThumbsUp:

Stew
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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #45 on: November 15, 2012, 06:21:26 PM »
I made the top and bottom lever collars. I cut a .012 slot in them and they were drilled .020. The gears are pressed onto the .032 stainless shafts so when I tried to assemble them I realized that I couldn't slide the top one past the horizontal one. What to do? I wasn't happy with the thickness of the upper flange because it didn't give the shaft enough support so to kill 2 birds with one stone I opened up the hole from .032 to .055 and made a longer brass bushing. This allowed the shaft with the gear to clear the horizontal one and once in place I slid the bushing down into the upper flange.
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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #46 on: November 15, 2012, 06:31:03 PM »
The next project was to make the ball levers. I tried a couple of different approaches because with the small size and multiple machining steps I kept breaking them. I ended up doing them this way.
I first turned a piece of .187 brass round to .100 (ball size) I then reduced the diameter to .043 leaving .100 for the ball on the end. With files and emery I formed the ball on the end of the shaft. I then buffed it while it had support.
From there it went to the mill and the dividing head. I trued the stock up with an indicator and found center. I then cut 2 flats with a .062 end mill leaving the web .015 thick. The 2 lever holes were drilled with a .015 drill. They end up at .020 but when I had drilled them larger in previous tries the stock would break when I put it back into the lathe to reduce the shaft size.
Once back in the lathe the shaft was cut to .03 diameter and the rear flat was filed by hand down to .012 thick.  The piece was then nipped off and the final filing was completed.
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Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #47 on: November 15, 2012, 06:39:22 PM »
The final 3 pictures show the ball arms assembled onto the vertical shaft. I made 2 pins at .020 diameter with a slight area at .021 so that when I put them through the holes they would bind in place.
I had to slip the flywheel back on for the last picture just to show the proportions of the governor. At first I thought it was going to look too large but with the flywheel for a comparison it doesn't look too bad. Next up will be the connecting links, the throttle valve and the levers and link to operate it.
gbritnell
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Offline Jo

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #48 on: November 15, 2012, 06:48:13 PM »
 :insane: Wonderful  :NotWorthy:  :NotWorthy:

I have decide that it is time I gave up making governors.

Jo
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Offline Bezalel

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #49 on: November 15, 2012, 09:34:59 PM »
George


I really enjoy your work, thanks, Please keep 'em coming,


I just wonder how many super macro photos you have to take of your bench top to ensure you get a couple of pictures with an engine in frame.  :LittleDevil:

Your're an inspiration to so many of us   :cheers:

Bez
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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #50 on: November 15, 2012, 09:41:43 PM »
Truly inspiring work  :NotWorthy: :NotWorthy: :NotWorthy:
I'm selling up and joining Don on the Electrical work
Thanks for posting
kind regards

Offline Don1966

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #51 on: November 15, 2012, 09:54:59 PM »
Awesome George, I am running out of words here. You are the best, I just love it. Keep those photos coming.

Don

Offline b.lindsey

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #52 on: November 16, 2012, 11:34:18 AM »
Well I'm out of superlatives for sure!!  I too would be interested in seeing the set-up for cutting the gears though and the cutter as well!!  Thanks George for keeping us all mesmerized!!

Bill

Offline ScroungerLee

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #53 on: November 16, 2012, 03:25:15 PM »
Very nice George.  I love tiny things like that, but as you say it takes creativity to avoid breaking too many teensy parts.  I appreciate your sharing your methods.

Lee
Mmmmm.... Shiny!

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #54 on: November 17, 2012, 01:14:01 PM »
Thank everyone for the comments,
Bill, attached are some pictures of the gear cutter and the cutting. I made a spur gear so it would be a little easier to see  :Lol: Whenever I cut a gear I leave a pointed nub on the blank. If the blank has a hole in it I preset with a piece of shaft with the nub. I have tried setting with a surface gauge but at these small sizes I just can't get in to see what I'm doing. With the nub I can line up the centerline of the cutter to the nub with a magnifying glass. The cutter is drill rod. As I had mentioned I layed out the profile of the tooth and turned the cutter blank to the top width of the tooth. I then cut the side angle to give me the approximate width at the bottom of the tooth  :shrug: The cutting was like any other gear, touch the cutter to the stock and dial in the whole depth of the tooth. I put marker ink on the end to help show the teeth. I also took another shot with the stock laying on my scale to show the size.
gbritnell
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Offline zeeprogrammer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #55 on: November 17, 2012, 01:21:41 PM »
Thanks for posting those pics and the explanation. Very helpful. Very daunting  :Lol:
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Offline ScroungerLee

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #56 on: November 17, 2012, 05:27:05 PM »
Ahh now I see how you did the cutter, I was being a little dense in the head :)

Thanks,
Lee
Mmmmm.... Shiny!

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #57 on: November 20, 2012, 02:06:56 AM »
This is today's update on the state of the governor. The vinyl tubing I was going to use didn't work out. It went together fine and held fast when I stretched it over the pulleys but as soon as it got the slightest touch of oil it slipped. Now what do I do? I started going through boxes, shelves and drawers trying to find something that would work. Nothing! I have 5 of those home building center 5 gallon buckets that I keep for material, mild steel, stainless steel, sheet steel, plastics and gasket material. As I was searching I found an old wallet that I had thrown in with the gasket papers for some future leather need. Well belting is made from leather maybe I'll give it a try. My pulley grooves are .032 wide and this leather is around .040ish. I cut of a strip and clamped it to my cutting pad. I then clamped a metal strip as a cutting guide and tried for .035-.040. It came out pretty darn close. Using the vinyl belt as a guide I cut and super glued the leather together. I let it dry and then kind of puckered up when I had to stretch it over the pulley flanges but it held. A little compressed air to spin the engine over and the balls flew out just like they were supposed to. I ran it for about 2 minutes and the belt kept working. I don't know how long it will be good for but for now I have no other ideas.
I also got the throttle valve and a piece of the linkage finished.
Anyway, enough of the idle chatter. Here's some pictures for today.
gbritnell
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Offline zeeprogrammer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #58 on: November 20, 2012, 02:17:06 AM »
Nice George! That last shot with the penny is a real attention grabber. Amazing.

I like the leather idea. I think I have to go the same way for Spinster.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Zee-Another Thread Trasher.

Offline b.lindsey

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #59 on: November 20, 2012, 12:25:52 PM »
Thanks for the gear cutting pics George and the latest update is just mind boggling too!!!

Bill

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #60 on: November 20, 2012, 04:20:56 PM »
Thanks for the gear cutting pics George and the latest update is just mind boggling too!!!

Bill

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Offline Don1966

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #61 on: November 20, 2012, 04:30:09 PM »
George can I take a vacation and go watch you work? You do such inspiring work. A video would be nice when complete. Iam just itching to see it run.

Don

Offline NickG

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #62 on: November 22, 2012, 07:30:04 PM »
UNBELIEVABLE!  :ThumbsUp:


 

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