What is it and what does it look like?
Hook 1/2 of yoyo with axle into drill. Spin fast, and put sandpaper on. Smoother grinds. Not much diferent, if don’t spiral saitin. Use search button, it helps.
what does satining do
Brian, open your eyes, can’t you see what he said? Lol!
Umm… It makes grinds more smoother, Brian.