Any tips for getting the casting marks out of the valve covers. I tried sanding with 220-320-600-800-1000-2000 but its still somewhat in there. He wants these to a mirror finish and I am struggling.
Also for the intricate details any tips or advice? I am generally not a small intricate kind of finisher.
In addition, for my business i do a lot of small stainless steel bottle openers, hand polishing is a pain, would a vibratory tumbler be better. the issue I have is the holes in the pieces tend to want to rip it away, while I try to lead on a face and not an edge it is hard to do sometimes with all of the holes. Picture is below of the item I need to polish.