Hi, I use the 9" X 11" silicon carbide paper on mine, either German made or 3m products. mostly do the flats on my blades starting with 120 grit, then going directly to 400 grit. Then the finish is easy to continue with hand sanding. also use the same procedure for the flat radius grind on my handles, finishing up with hand sanding. I use the Duro spray adhesive, seems to have the right amount of sticky without leaving paper stuck to your disc.
Sincerely,
Sampson Knifeworks