I have a jewelers(sensitive) drill press..very accurate,,but I broke the drive belt on it. It was an old fabric covered round rubber belt. I can find polyurethane belting up to 3mm but cannot find anything aobut 3/8" diameter or so. I think an octagonal belt would work also. Anyone have a supplier for something like this. The drill press is a Hamilton and I use it for slipjoints and like it a lot.