Hey all,
I converted my lms minimill to cnc, added a heavy duty bracing column and made an entire welded and dampened stand for the mill. all of which helps a ton! However, if i take too heavy of a cut, the z axis gibs become loose. Even on semi heavy cuts, its clear that where the spindle head meets the column is its weak point.

Has anyone found any good solutions to improving that area? Would swapping out the stock gibs to something like brass help? If we went crazy and swapped out the dovetails for linear rails would that work? I'm wondering how much further i could push this little mill while still using the same castings.

Thanks!