Like most, I've ended up with a big box of used 3" sanding discs from all the projects that have been in and out of the shop. The discs are well worn but mostly on the 1/4 outer edge. Ive thought of making a unit that would trim a used 3" disc to a 2''er. Scissors are no match and take forever. Something on the lines of a wall hanging can crusher type unit that I can place a disc into and it would self center, a pull of a lever and walla, a 2" disc. Anyone ever made one or know where I can get one? With the price of these discs and the ever deminishing economy Im trying to save where I can. Pics?