Which types of Abrasives have you used for Sharpening, with great success? Most Synthetic Waterstones use Aluminum Oxide, many of the vintage Black and Grey synthetic stones use Silicon Carbide, Arkansas stones are Novaculite, BBW's and Coticules contain Garnets, etc. I have been very impressed by Silicon Carbide myself. It cuts fast, and puts teeth on that edge. Creates a good edge for fast cutting and hard use. Follow it up with Aluminum Oxide, or Novaculite, and you get Hair Popping Sharp edges.