I bet you, like me, have struggled before to remove a 12″ adhesive-backed sanding disc from your disc sander. Even when the disc is spent, that adhesive wants to keep sticking as you peel the disc off of the plate. The other day, I faced this task again but with a new approach: I dusted the backing with baby powder while using a putty knife to pry it off. The powder adhered to the adhesive to prevent it from sticking again, and it really helped. Make sure to vacuum the plate clean again before you install the new disc to keep it from coming loose.