I sanded an oak book shelf today. Prior to sanding I was dealing with some
serious planer marks. I used a PC 5" ROS and went from 80 to 120 to 220
grit. I removed about 98% of the marks and did a pretty good job of getting
a smooth surface.
All told, I was running the sander for about 1.5 hours. After I finished, I
used a small compressor to blow the dust out of the sander. It took about
5-6 cycles to completely remove all of the sawdust. (At least to the point
where very little was blown out).
My question is this: Is it possible to harm the inner workings of the
electric motor by using compressed air? I can picture the air pressure
blowing some dust into the brushes or switches. I sprayed the air from into
the exhaust port, through the pad holes, and into the vents in the sander
The same question applies to a circular saw, mitre saw, and jig saw. (Which
I also used compressed air to clean)