I use sandpaper glued to glass for sharpening chisels. What kind of sandpaper should be used for this? I’ve always used whatever sandpaper was on hand, from garnet to silicon carbide, but now the glass is scratched up. Don’t know if the scratches were made by the tools being sharpened, or by grit from the sandpaper.
It occurs to me that sandpaper hard enough to scratch glass would make quicker work of sharpening tools.