When I first started researching how to strip my truck, I saw a lot of no-nos for an angle grinder, and a friend of mine who does auto body said the same thing. I was kind of afraid to use chemical strippers, so I went out and got an Eastwood contour sct, which is a variable speed drum sander that's really mild, and was recommended by another auto body friend. After 3 hours of work, I was only half way done my hood and was already half way though the $60 stripping drum, so I went to harbor Frieght and got $5 polycarbide stripping discs for my angle grinder.

I started using the angle grinder with the polycarbide disc on the other half of my hood, and haven't really had an issue. It works fast, doesn't heat metal to the point where it hurts to touch, and doesn't cut into the metal. It does leave some light scratches if I use the wrong angle, but they buff out really easy going over them again flat. I don't really see the issue, the finish is nice and it doesn't heat the metal to warping temp

with the 9" grinders the rpms is usually to fast for anything but a grinding disc. with the 4 1/2 grinders you can use the flap discs and other abrasives but still to much rpms.
Jay D.

If you want to strip paint really fast, use a buffer with a 6" disk.
80 grit makes clouds, I run it about half speed, around 1800 to 2000 RPM.
It's much faster than a DA because it is single action, only spins,
unlike a DA (dual action) that's for a smoother finish.
Plus you don't have to work a compressor so hard by using electric
instead of air.

Also, if you sand with to fast a speed, it tends to heat and soften the paint,
the paper loads up more quickly, Sometimes slower works better.

I use an angle grinder. the speed of the grinder is what takes the paint off. you dont have to press really hard and make all that heat.

just make sure you wear good safety glasses and a dust mask

JCCLARK wrote:If you want to strip paint really fast, use a buffer with a 6" disk.
80 grit makes clouds, I run it about half speed, around 1800 to 2000 RPM.
It's much faster than a DA because it is single action, only spins,
unlike a DA (dual action) that's for a smoother finish.
Plus you don't have to work a compressor so hard by using electric
instead of air.

Also, if you sand with to fast a speed, it tends to heat and soften the paint,
the paper loads up more quickly, Sometimes slower works better.

THIS ^^^ also you must be careful what you put on that grinder, as most are in the 11000 rpm range to fast for some sanding or striping materials.
Jay D.