My worst tool buy was a Skill 1/4 sheet orbital sander. The spring loaded clamps which were used to mount the sandpaper were better suited to break finger nails, and vibrate the nrves in your arm. Finally just tossed it.
Note to Swingman; The ill fitting rubber crutch tips which don't quite fit the legs of those saw stands can be gotten on if you boil the tips. That softens them enough to squeeze them on. Joe G