When you read the title , it's a Oh No not another sharpening thread, but please bare with me. I use a Viel sander and a jig to get the basic bevel, then a Veritas Mk II jig and waterstones. Right now, on the sander I use a 120grit belt then jump to my my first waterstone, a 700 grit. The two different jigs always leaves a small discrepancy in angles. Jumping that gap I first tried wet/dry ,when sandpaper loses it's bite I change it, otherwise it takes forever. I next tried a DMT 320 diamond stone, the finish came out finer than a 1000grit Norton, since replaced with a Bester. That to me meant a break down of the plate causing more time and effort. My next plan was a 240grit Sigma . This was a waste of money. The stone dished quickly and deeply requiring much time and effort flattening. I've heard the same compliant of the Norton 220grit. Any suggestions ? I'm quite satisfied with both the sander/grinder and my waterstones.