I've found 40, 60 or 100 grit flap discs on an angle grinder works best for getting anything clean - and if you save the well worn finer grit ones, they do real good on finish smoothing of welds and even polishing scratched aluminum
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
