so its only logical, that if someone who is as highly skilled as yourself in body work, uses dry ice, then it must work, and be somewhat reliable for you to even consider it worth your time... then its quite possible that something thats just as cold could work too.
but after some research, canned air with tetrafluoroethane won't work... its not cold enough. You'd need to find canned air thats liquid CO2 based, if your going to try it... (its approximately -109F)
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