Support BladeForums! Paid memberships don't see ads! Hi all, I've been doing course edges on most of my blades for awhile now but recently had a whim to mirror polish a few of my newer blades. No particular reason, just wanted to see if I still could. I have been able to achieve a hair whittling edge on one and not the other and I'm not 100% sure about why. The two knives in question are a Spyderco Dragonfly 2 in ZDP-189 and a PM2 in S110V. The Dragonfly will whittle hair, the PM2 won't quite do it. Both are at 15 DPS. The Dragonfly was sharpened freehand, starting with a DMT Course up through a DMT EE-Fine, then 1 μm diamond pasted strop, 0.5 μm diamond spray strop, then 0.25 μm diamond pasted strop, finished with a few strokes on plain leather. The PM2 was sharpened on the Edge Pro, starting with an Atoma 140, Venev 240, CKTG 400, Edge Pro Diamond 600, Edge Pro Diamond 1200, Venev 1200, Venev 2000, 1 μm diamond pasted strop, 0.5 μm diamond spray strop, 0.25 μm diamond pasted strop, then finished on plain leather. I'm trying to figure out if it's just an issue of not spending enough time on the strops when finishing the PM 2. It's extremely sharp, but won't quite grab a head hair when attempting to whittle from the tip toward the root. I can see the hair shaking as it passes over the edge, so it's trying to grab but isn't quite biting in. I've confirmed using the Sharpie and a loupe that I'm hitting the apex of the edge and I can't see or feel any remaining burr. Anyone have any ideas why they're not performing similarly, since I'm finishing with the same abrasives? How many strokes per side are you guys doing with your strops to get that perfect hair-whittling edge on the more vanadium-rich steels? I'm guessing it's not enough time on the strops since the steels are rather different in composition, but am hoping someone with experience on this will weigh in. Thanks!