Quote Originally Posted by cweeks View Post
So lets say I want accuracy down to 0.05mm I just make each half step equal this ?
50 microns probably requires an iron machine rather than aluminium and certainly not MDF

Why not find someone who has built a similar machine to the one you have planned and ask them what tolerance they can get out of it?

I don't have a laser or a router, I have a mill. FWIW I quarter step to 5 microns and hope for 10