LOL, this is funny because my father-in-law was sitting across from me watching me sew, when he saw my rotary cutter, he says "Hey we got one of those" Goes on to tell me they used it to cut a bunch of paper now it won't cut fabric. he then says how he has a bench grinder and wants to see if he can sharpen it. I gave him a blank stare and said "don't you think that is like taking a sledge hammer to a finishing nail?" He says, well, not if you do it right. i will tell him about this product, he needs it! LOL!!!!