Milling machine tramming kit - video

[Jon]

Milling machine tramming kit. By Southern Ingenuity. 11:54 video:

[Floradawg]

Wouldn't it be better to just clamp the plate to the table? That is the foundation for anything used on top it.

[Toolmaker51]

Original, but over thunk'ed.
Leveling (or most any positioning efforts) are best accommodated by 3 bearing points. Depending on adjustment range needed, most can be done with 2 jackscrews, the third usually remains undisturbed. Fine thread pitches work best. As to the plate, it's hard to beat a resurfaced disc brake rotor, drilled and tapped for long set-screws.

[Toolmaker51]

Wouldn't it be better to just clamp the plate to the table? That is the foundation for anything used on top it.

Agreed. Leveling against the vise body is pointless; especially when compared to machine table (or bed of the mounted vise/ fixture).