Clearly a lapping machine allows the refinishing of SS cases, however as a relative novice in such things, it would be great to understand more.
By the looks of things even deep nicks in a case can be filled and refinished with a range of brushing effects - is there more to it that than? Do they work equally well for polished SS finishes?
From a practical point of view what can a watch maker with one of these do that one without cant ?
Apologies if a bit uninformed but keen to know more!
Cheers