1:48(On30) Brass 0-6-0

[lab-dad]

On to the dome!
I decided I didnt need a "jig".
I just mounted the rotary table on it's side (I have a plate to do this as I often do things with the table mounted vertically) and put the 3-jaw chuck in it.
I wasn't really sure how to make sure it was all lined up on the center line so what I did was put a .032"
music wire in the chuck and a .032 bit in the mill.
Even so I guess the cutter is slightly offset, so I had to move the table back .005"
Here we are after the tweak about half way through the cut.

[lab-dad]

And the final pass!
The fly cutter cuts great! I'm really glad I needed it! 
I ended up moving (or removing from) the dome .025"

[lab-dad]

I think I did pretty damn good for a first time!
Now for those sand domes that look like turds........

[RoughboyModelworks]

Good job Marty. You'll find the fly-cutter a useful addition to your arsenal. Also works well for surfacing large areas.

Paul

[Ken Hamilton]

You guys with your machining skills make me jealous.
Great job - great project.

[finescalerr]

Beautiful work. (But if you had made the domes from balsa you could have shaped the undersides with sandpaper on a dowel!) -- Russ (Heading for the corner.)

[lab-dad]

Hell, I shoulda' made it outta paper!
Then I coulda' made Xerox's for everyone!

I know, I know, I'm right behind you (a few steps back though!)

-Marty

[Philip Smith]

Good tight fit! thanks for the sbs.

Philip

[lab-dad]

Not a lot of progress......but some.
I wanted to have a piece on top of the steam dome for the whistle and pop off's
Having a separate piece also made it easier to drill the 3 .029" holes on the rotary table at 120 degrees to one another.
Also the "turret" I will leave brass so installation will be after paint.
The whistle & valves are just sitting in there.
FWIW the base is .025" dia. and .016" thick. It does have a .100" spigot for mounting into the dome.
I also drilled & tapped the dome 6-32 for its eventual attachment to the tank.



-Marty

[finescalerr]

If you keep working in brass, you will get so good that you will be like Chuck Doan with wood or Gordon Birrell with styrene or Marc with paints and scrap materials. Disgusting. -- Russ

[jacq01]

FWIW the base is .025" dia. and .016" thick. It does have a .100" spigot for mounting into the dome.
I also drilled & tapped the dome 6-32 for its eventual attachment to the tank.

show off     Looks very good

Jacq

[TRAINS1941]

Great job MJ.  Your metal working skills are just getting better with each piece you create.

Jerry

[lab-dad]

Thanks guys!
Unc, just trying to find my niche
-Marty

[JohnP]

I like this line:

"Having a separate piece also made it easier to drill the 3 .029" holes on the rotary table at 120 degrees to one another."

This is a man who is familiar with the capabilities and benefits of the tooling. I pro'ly would have marked the hole centers by hand and used the drill press...even with the lathe tooling at hand.

Next Marty will transform Turds into Turnings.

I enjoy reading everyday shop cleverness by others. We ought to start a thread about that.

Nice work Marty!

John

[lab-dad]

Thanks John!
I think that is what I enjoy most about this forum;
how others solve "problems" and take the time to explain how they were solved.
Tools and set ups, jigs ect.

No turd turnings, although with a 7 month old Labrador Retriever I sure have plenty of material!

-Marty