Rockler Woodworking & Hardware has adhesive sandpaper used to mount on flat glass for sharpening chisels, plane irons, jointer knives, etc. The Fine Paper Set #25033 comes with ".. two each of 800, 1200, 1500, and 2000 grit, 41/2'' x 11'' Klingspor finest paper with ''peel and stick'' application."

I trimmed a piece of 800 and 1200 for my PSK. If needed I can peel the backing and stick on top of my PSK tin to turn it into a shapening "stone."