AMuzi wrote, on Fri, 11 Dec 2015 08:12:17 -0600:
Most chemicals don't know what company they work for, so, while I fully and completely *understand* your concerns about having all the chemicals coming in the same color can, I pretty much consider naptha from brand A to be the same as naptha from brand b.
I don't buy scared.
The carbide bit is usually set to about 2000 to 5000 rpm in most of the professional descriptions; it's the half-round rasper that seems to be set really slowly at 500 rpm.
The pre-buff step can be skipped, as the main purpose seems to be to prevent the half-round rasper from getting clogged, which is something of import to a guy who fixes tires all day, but which is far less important to a guy who only repairs his tires once every three years.