Funny I’ve been looking at them to strip the roof on my van. I bought a few of those 4-1/2” grinder paint strippers from a professional welding store. The ones that look like some sort of crazy wire with a coating. $18 each but if you let them do the work and just basically hold on - they seem to be working but dusty. That monster (Eastwood unit) looks like it could really strip some paint.