The rivet shaving tool is fully adjustable. You could grind off just the stem, or you could end up shaving the entire rivet head which means the head would be thinner. I only removed just the stem and a tiny bit more. I gouged the head on few of the rivets because I didn't start the drill before making contact. (Yes, I cut off all the stems before shaving them. I tried one without and it took a lot longer and probably would have dulled the cutter if I did that 1,000+ times.)
where'd you buy your shaver ?
model # ?