I went to the Home Depot to buy a Norton Rapid Strip Disc. Something has changed; the Home Depot only stocks Diablo brand abrasives. There wasn’t an equivalent product in the Diablo brand. I went to Lowe’s and found they only stock Gator brand abrasives. I picked up a Gator brand paint and rust removing disc.
I mounted the disc on my 4 1/2″ grinder and skimmed the top of my portable welding table. I also knocked the mill scale off a short piece of bar stock and angle iron. The product worked, but was about half consumed.
I guess I have to buy Norton products online.