Assembly Fixture

My thought would be to bore it in a piece of round bar, weld/braze/bolt the back section on and then cut it in half.

A bunch of keyseat cutters?

Almost looks like you made a cutter or cutters on the lathe to mount on the mill, and I bet the sides of the fixture are a tad less than 90 degrees.

Dave

Actually, they are just a tad more...

Close. No heat was used.

Machine left side cavity, machine right side cavity, press or otherwise fasten the two pieces to each other, then finally mill away the top and sides of the assembly.

You turned the core and cast resin (Bondo?) around it?

jsw

That's it. Two aluminum parts turned on the lathe, sleeved together with a .003" gap, bonded with Loktite

Gap doesn't show at all on picture, parts of it are barely visible under a magnifying glass if you know where to look.

(...)

That is genius!

Thanks for showing us that, Jim!

--Winston

Nice work, and nice to know I wasn't far off :)

Thanks. The hardest part was waiting the

Suggest just use superglue full strenght--if you want to use it as a filler then add baking soda, to slow the setting rate add linseed

It's a textbook application for 603. I've used it before and the wait was acceptable.

You'd probably have found that 603 was strong enough for machining after only one hour. I tend to use a slightly smaller gap, but it's my friend for fixtures :-)

Mark Rand RTFM

Jim Stewart wrote in rec.crafts.metalworking on Wed, 08 Jun 2011 11:29:52 -0700:

Coplanar? Do you mean parallel?