Hello, currently, I am experimenting with polishing an old watch case made out of stainless steel. I polish everything with hand, I am basically tried to follow the tutorial made by Nickolas Hacko here http://www.clockmaker.com.au/rolex/rolex_case_polishing.html I started with P220, moved to P800 and P1500. However, the scratches were still visible, so I continued with Silicon Carbide 1200/4000 (I would say this is the finest sandpaper I had). After that, I proceeded with the polishing past