How to converge to the desired diameter when fitting pieces?

All discussion about lathes including but not limited to: South Bend, Hardinge, Logan, Monarch, Clausing and other HSM lathes, including imports

Moderators: GlennW, Harold_V

Conrad_R_Hoffman
Posts: 440
Joined: Wed May 24, 2006 8:40 am
Location: Canandaigua, NY
Contact:

Re: How to converge to the desired diameter when fitting pieces?

Post by Conrad_R_Hoffman »

You have to understand how small the difference is between too-tight and too-loose. With small parts it can be a couple tenths or even less. Combine that with the fact that few people have the ability to measure a bore that well and you can see the problem. Thus the need to sand/polish. 1018 is hard to get a good finish on. If you absolutely have to use it, try a shear grind on your tool. That can get you a finish almost as good as ground.
Conrad

1947 Logan 211 Lathe, Grizzly G1006 mill/drill, Clausing DP,
Boyar-Schultz 612H surface grinder, Sunnen hone, import
bandsaw, lots of measurement stuff, cutters, clutter & stuff.


"May the root sum of the squares of the Forces be with you."
Post Reply