Back in the day I worked in an air cooled VW engine shop. We used it to align bore the VW engine cases. The problem was that the case bolts would loosen and the Maine bearing bores would become oblong. You had to align bore the cases to make the bores round again to properly fit new main bearings. Had a machinist running one of these six days a week eight hours a day.

Just found your channel and Subscribed. Nice work

Hi, good day, I am from Jamaica, and I see you videos I have a rottler boring bar without tooling so I am ask you to point me in the right direction

This was a waste time, guess they had nothing to do that day!!