Greetings, I want to build a simple 12 inch disc sander. I have a motor, and know what I want to build. BUT, what can I use for the disc? Speed wll be
1725 RPM utilizing a 1/2 horse motor or alternately 3450 RPM using a 1.5 horse motor. I don't want to make something that might fly apart. Looking at some of the cheap (grizzly, harbor freight) disc sanders, they seem to use aluminum for the disc to which an adhesive sanding disc attaches. I don't have access to a 12 inch aluminun disc. Would a plywood or MDF or for that matter a solid wood disc be acceptable? Any suggestions for a backing material that would be safe to use? Something already round and 12 inches in diameter would be ideal. I can drill a center hole to adapt to the motor shaft. I have considered an abrasive cut--off disc but can't fine one in a 12 inch size. Obviously, the material needs to be ridged enough not to flex when pressure is applied to it's face. Ideas? suggestions? TIA Mike in Arkansas- posted
19 years ago