Quote Originally Posted by tmarks11 View Post
I am thinking it is not that the table is not flat (although that might be true), but is that the head or column is out of tram.
Tram cannot explain the table appearing to rise and fall as it's moved side-to-side. That can only result from either the table being thicker or thinner, as measured from the table surface to the horizontal portion of the ways, at various locations, or the machine base twisting, a LOT, as the table is moved. The Tormach base is a big, beefy casting, and it's not going to move significantly just due to the weight of the table. You can tilt the column 10 degrees, and a dial indicator in the spindle should show no rise and fall of the table surface.

Regards,
Ray L.