Quote:
Originally posted by TurbineSlut
Gonna get a CO2 bottle as a pressure source soon. A 5kg bottle will get you a lot of pressurised CO2.
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You do NOT, repeat NOT want to do that!
PVC or ABS gets brittle when it gets gold. When you turn liquid CO2 (as it is in a bottle) into gas (as it is when it comes out of said bottle), it is extremely cold. That is why regulators will ice up on MIG welders when they are under constant use.
Dumping extremely cold gas into a spudgun and then dumping the pressure again (losing even more temperature) is going to make the entire thing very cold, very fast. Not good.
You want fast air, get a compressor. DO NOT use bottled gases.