An Easy Way to Reduce the MiniMill's ZAxis Backlash
The typical Sieg X2 minimill [HF 44991, Grizzly G8689, MicroMark others] has a lot of backlash in the my case it was .053inches, which was almost a full turn of the fineadjust knob. I heard that putting a shim behind the rack on the column would help by causing it to mesh tighter with the pinion gear in the head.