I'm interested in this as well.
Getting a good gap tolerance may require some practice to achieve. If you parts are +/-.001, then your gap runs from .001 to .005 if you were aiming for a .003 gap.
Also, I'd wonder about hardness issues. Are you machining the die while hard?
Can you run a grinder on one of these machines to grind to final size after hardening?
-Jeff |