Some knives have a warranty that is void if not cared for properly. Years ago a friend of mine had a Buck knife that the blade chipped on. He sent it in, and they refused to repair it because he had sharpened the blade at the wrong angle.
Microtech states warranty void if sharpened by customer.
I called and spoke to them about it and it only voids the warranty if you screw up the bevel. Microtech uses a crazy small edge. It is very hard to sharpen and very easy to screw up.
