I sometimes run my airbrushes off a scuba tank, when I don't feel like cranking up my compressor. I have an older externally adjustable Aqualung reg that I use. Normally the LP ports are set at 125 PSI, but since the reg has an adjustment, I just turn the output down to use an airbrush. My set up for the scuba tank use didn't cost me anything, as I already had everything. If you had to actually buy the needed items, it wouldn't be cost effective. Honestly it would be less hassle and cheaper in the long run to just get a compressor to run your airbrush.
__________________ If meat is murder, I'll have a beer with the murder please.
My Feedback Thread