I have used one extensively on removing the heavy rust scale......welded rubber tire casing with fabric attached on the rims of my truck.......before sandblasting. I am sure I save twice the cost of the sand to remove the crud on the rims....... takes about an hour a rim.....and takes a lot of air from the compressor. Noisy....rims ring like bells... if they do not ring discard it is probably cracked. You need to wear heavy insulated gloves for the vibration and ear protectors and a face shield.
Worked good for me....tool can also be used as an air chisel on frame rivets to be removed. Mine came from Princess ....... runs good for me.
Caution.... to be used on heavy metal with rusty scale.... NOT for sheet metal.
I did some work ofr a friends snow plow harness that had about 12 coats of paint.... worked great but the needles left pock mark indentation in the cheap soft steel of the plow frame.
Rat-tat-tat-tat.....have a good time!!!
