Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Not really great for large tools
Review: I was hoping this would work on a spade, shovel, etc. just like they show in the picture. It ONLY works on thin blades. NO WAY will this put an edge on a large tool. It did sharpen small pruning shears and a chisel, both with pretty thin/decent edges. I would not recommend unless you need for small hand tools.
