also, dont't forget about the other side of the blade holder. opposite of the thunb screw is a set screw in the blade clamp, the surface gets polished and/or worn smooth and oily from dirt. Dewalt.com has a nice diagram of the parts. i take the clamps of every couple m,onth and set the set screw with fine file and wash the parts of with paint thinner. i also have a small piece of 600 grip sanding sponge that I wipe all the ends of new blades before i insert them to keep down on the oily surface buidup. as others say, overtightening maked them slip faster becuase you are grinding the metal baldes against the set screws and making them very smooth |