Gang, For a decision over $35.00, this was long and troublesome. A buddy of mine bought the Harbor Freight grinder for $29.95, and I was less than impressed with the quality. Couple that with having to pull the chain off the bar, and I ruled it out. Northern Tool has a grinder that clamps to the bar and operates off two battery clips, but I decided against it because battery power in the woods, in the absence of owning a quad, is not something that's guaranteed. The Granberg is powered by coffee and donuts, the chain doesn;t have to be pulled off the bar, and the price is right. We'll see how it does, but given my tragic chain sharpening skills, a blind castrated three toed sloth could do a better job than me. the Granberg should be a vast improvement.