70, just start on a small object , learn the process of removing just the damaged areas and leaving the flat , unscratched areas alone. Polish and object first to see damaged areas. Be agressive, be gentle. Go over an object several times is better than giving yourself more work on a section that just needs polishing.
Tools we talked about in the , off topics Threads. I guess I’ll have to add a few comments that I was wrong about, 4-600 grit is good enough and even 220 to see a nice polished finish once buffed with green rouge on a fabric wheel.
Dakazman