How would you go about making a matched set of 6" mill vises?

[DeanB]

Never thought of shims to bring the base height level. Seems like that would be a point of inconsistency when removing and reinstalling.

The shim is between the riser plate and the vice base. Shims are never removed.

 

[Karl_T]

I have two vices on my CNC mill. Just use AL softjaws and machine them in one pass when both vices need to be matched.

I REALLY LIKE two vices when doing repetitive CNC work. Just change out the other vise while the machine runs.