Thought I’d share my experience with S30v. I sharpened my Spyderco Para 3 on DMT plates. After a few trials I settled on sharpening and refining on the coarse, then refining and deburring on the Extra Extra fine. Nice and toothy and shaves hair clean. I pulled the blade threw a piece of wood as part of my deburring process, and it made all the difference in the world.