[NightHawkInLight] a.k.a. [Ben] recently built an awesome high power air cannon out of PVC pipe. PVC air cannons are great, and everyone should build one of these at some point in their life ...

Description: The System 1738 PVC Product Line is a flue gas venting plumbing and mechanical solution certified to the stringent UL 1738 standard, a development for gas-fired water heaters, furnaces, ...