+1 on the Spyderco---it's ain't cheap (about $55) and it ain't fast, but if you take your time and follow the right procedure, it puts a razor edge on a knife or broadhead. I always follow up with a strop, just for good measure. I used to get my knives belt sharpened by Bob Kramer in Seattle, first time using the kitchen knives both the wife and daughter cut themselves!!!
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Build a man a fire and he's warm for a night. Set a man on fire and he's warm for the rest of his life.