Changing Piston Rings in Car

If you have to use some outside abrasive to seat rings, your machinist is doing something wrong.

I agree, even with my LIMITED engine building experience it sounded sketchy to me, and when I asked my cousin (my machinist) about it he said I wouldn't need to do anything like that, and that I wouldn't have any problems with compression or burning oil if I installed the rings correctly. He was right.