Quote Originally Posted by petruscad View Post
Do you mean grinding the linear rails bearing block tops parallel to the bed? I think not. I do not intend to do that!

I will mount the rails and then move a dial indicator attached to a block to scrape the steel plate in the middle of the base parallel to the rails. The ball screw will mount there.
Sorry, I meant the bearing blocks for the ball screw fixed and floated end!