Quote:
Originally Posted by John_1102
Umm Yeah the principle of compressing water has to happen other wise when you put your finger over the end of a hose nothing would happen. Water is compressable. 1000psi water jets are used to cut steel.....so again logic isn't following here. It's compressable to a very very small degree.
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The point everyone here is trying to make is better safe than sorry. Your PVC may be rated for pressure on the inside, but what happens when you've used your gun time and time again? You know, storage, moving it from place to place. What if you drop it? Chances are you'll make defects in the exterior, and it'll weaken as time goes on.
Your cannon has a chance of failure. What happens after failure is shrapnel, bits of plastic flying in every direction at ridiculous speeds.
By definition, liquid water isn't compressible (liquids have a definite volume). Since water doesn't violently expand or change shape when its depressurized, there is no chance that it'll take the plastic with it.
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