I bought this set to use for a variety of woodworking jobs, primarily edge trimming and other edge finishing of plywood. I was disappointed with my first use to find that the router blade cut into the surface of the plywood rather than just trimming the excess edge off the plywood. My guess is that storage and sheet stability is not as good as it should be, leading to such disappointing results. I have not tried other blade sizes; This was done with the smallest diameter bit in the set.