I used a 3 to 4 inch wheel mounted on an adapter that is on a cheap
electric motor - less $$$ than a real bench grinder, but does the job
for what little I need it for. I think the adapter came from Sears,
but that was many moons ago. I'm sure the wheel in a drill like
Phillip suggested will work
Got the 7/8 allen wrench - huge. It's .2mm too big,
but haven't tried it yet. Finished up rear brakes and
rotors last night (and adjusted parking brake).
Tonight I will remove A/C system (another story) and
then get to fuel tank. I need to get a bucket for the
fuel and the flush (I think there is