Yeah man, stay away from the compressed air... not only are you driving stuff deeper. If your using a standard shop air compressor set up, your tossing oil & water all over everything.
Shop vac the better way to go, I always use a small soft paint brush to help loosen anything chips that might be bothersome about being sucked up.
Don't forget your PPE's when doing it and be sure the robot is powered down.
-p
