I'm in the process of prepping my block for new head gaskets. I've scraped off all I could with razor blades. I was advised to find a red scotch brite type attachment for my power drill to knock off the remainder of the gasket material down to the bare metal.

I'm having one hell of a time finding anything to get this done...been to NAPA, Lowes, Home Depot, Pep Boys, Sears, etc. Can't find shit.

So what do you all use get this shit off the block?