Quote Originally Posted by Radu_Andrei View Post
Hi Rob. I had the same thought initially. A water level. Although old fashioned, for long distances, I do not know a better method today.
But still, the question remains, what do to first. Rails or bearings?
Work from bottom to top i.e Frame, X rails, Gantry, Y rails, Spindle, then you are not so likely to be re-iterative with your adjustments.