I don't use canned air but I bought a small air compressor to blow out the bobbin area of my longarm machine and I also use it to blow out the bobbin area of my domestic machines. I know of other longarmers that do the same thing..my compressor has already paid for itself if you compare the price of canned air. Ive been doing it for nearly 7 yrs and have never had any problems as a result of using it.