I guess some folks are truely blessed with being able to sharpen those 3 blades or maybe their definition of sharp isn't the same as mine? To me if I can't "hear" the hair popping off my arm and there is any hair left after just 1 swipe it ain't sharp. When I first started in Trad Archery I really really wanted to use those huge 3 blade Snuffers. I'll admitt they look like they will cut a chicken in half. But after 2 dozen snuffers, a Snuffer Tamer and everything else I could try to learn from here and the other site... PvC pipe with sand paper , the Snuffer Tamer, Belt sanders + 100's of hours trying ect. I finally figured out... IMHO you can't get a 60 degree bevel anywhere near as sharp as a 21 degree bevel...And you can't get a 21 degree bevel as sharp as a 17 degree bevel. That's why a straight razors so thin....
The best thing I have ever even came close to while using was the Tamer. But it takes off so much metal to knock down the bevel it ain't funny.