Bdyman, how thick is your skull?? The propellant in a can of canned air is just as cold as dry ice. Common fuggin sense tells you that if dry ice works, which you openly admit does, then using the propellant from a can of canned air will work too. If you would rather enjoy stick COMPRESSED air up your ass, then go for it, whatever turns your crank. NO ONE on here was even talking about compressed air, we where all talking about CANNED air, which uses a propellant that when compressed is in a liquid form, but when decompressed is in a gaseous form. (basically like the properties of ANY gas!!!) Friggin grade school teaches you that!!. NOW, when you turn a can of canned air (which isn't really air at all) upside down, you release the LIQUID that suddenly decompresses, cause immense cold to happen. (This is the part where highschool physics comes in!)
If you can't get this through your thick skull, then forget it. Everyone else knows it will work, common sense and physics tells you it will work, too bad your vastly superior knowledge of bodywork can't tell you it will work.
Have a nice day!
