Quote Originally Posted by JAZZCNC View Post
In the picture you still have the protective coating on the plate so you can't trust those measurements if you did it with that still on.?
The covering is tight and uniform so I think I can trust them enough, I DTI'd the milled shims first which was zero everywhere, happy that my +/- 0.01mm on the top is a mixture of error from the covering and the plate itself. Anyway doesn't need to be perfect as the spoil board will take up any error, if I need a very flat part for bolting a vice to I will skim the aluminium bed, I left the bolt heads low enough to do this.