I thought it was worth documenting the process I went through and the findings I made for a couple of the Myford cross-slides I had to refurbish, one for an ML7 and the other a Super7. What I consider the important lesson in this possibly being that you need to "be a detective!". In this case this refers to the interpretation of the indicator reading on the cross-slide ways and inherent challenges associated with the tendency for a T-slot to grow, hence needing to pay attention to the upper surface flatness.
PS! One point towards the potential need for grinding the side of the cross-slide..
These parts are normally machined good so that the sides can conveniently be used as reference surfaces (ie. true to the original geometry) when working with the dovetails. However, on some machines they are quite "battered" on their left hand side, I assume from being hit by the chuck jaws and in general facing the "business end of things". Therefore they need a touch-up to be useful as a measurement reference. The sequence I then take is to stone the opposite side (where the gib block pusher screw holes are), set this down on the magnet and grind the other side. I could of course have used the "gib-side" as reference, just running the indicator towards the non-gib dovetail, which now would be higher from the table.. on a Myford cross-slide.. no problem at all.. :) However, I still wanted to improve the left-hand side and get rid of the "witness marks"
