If it has an edge, they can sharpen it! They do so much more than just knives. Scissors, toe nail clippers, garden tools, and more! If it's dull, it's dangerous" and "Don't buy new, let us re-do." O'Neil swears by both slogans. Knives--or anything with an edge, he says--need care just like any other tool. If a knife, scissors, the blades on a lawnmower or garden loppers aren't sharp, the users will have to exert more force, which can lead to injuries and damaged tools. And, he figures, he has the know-how to make anything look and work like new again.