here's how i solved my issue in wanting to do some reverse sanding...
used one of these rubber pads made for putting in a drill
mount it in the drill, and push against handwheel..
worked good for me. of couse sanding became a one handed operation.
maybe if i can get my kid to learn speed control, he can run the drill..hehehe
now that being said, would this be harming the motor in any way?
i kept the speed below 500 rpm, i'd estimate.
thanks.