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Laser Cutting Class
Just to note so misinformation is not propagated, air and liquid are VERY different in terms of failure mode. As liquid is incompressible, failure of a liquid-filled pressure vessel is very different and relatively benign compared to the failure of an air-filled pressure vessel. Air is compressible and therefore the failure of an air-filled pressure vessel looks a lot like an explosion. I have not studied the properties of PVC but would encourage anyone trying to build a pressure vessel from this material to consider safety first and not to disrespect air as a source of energy.
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