One more way to remove weld is get a few flap sanding disks from a hardware store they come in differant grits and they don't hold the heat as much.I use them in my 4inch angle grinder on lower speed and also have the 2inch type for my small air grinder to get in tight spots you can get some 80 grit to get close than use some 240 grit for a nice smooth finish.
Pete
