Makita 3 x 24" Belt Sander "sanding slips badly" Questions

Sanding Belt Slips Badly I have a Ryobi 4x36 Belt/Disc Sander, Model BD4600. Even with a new SANDING belt, it slips or stops as soon as a piece of wood touches it. The yellow gear on the right changes

slipping belt My Makita belt sander 9924DB has suddenly started to slip its belts. Its as if the belts (3X24) are too long. The motor works fine, the roller spins but they don't grip the belts anymore

how to remove a drive roller on a black & decker ds321 type 2 Just finished the exact thing, so here's the read deal: - The screws on the drive roller ARE reverse thread. - My old roller got too hot ...