But not [truebassB], instead he built his own air pump from first principles (YouTube, embedded below) using PVC pipe. It’s a straightforward design in which the cylinder is a length of pipe ...

[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 ...

PVC pipe complies with NSF 61 ... Those communities are particularly at risk from contaminated air and water due to hazardous chemicals involved in its production, especially vinyl chloride.

Step 7: Let the PVC dry for 24 hours. Allow paint to air-dry and cure for at least 24 hours before using it in your project. For projects that could scrape or nick the pipe’s new coat of paint ...