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 ...

You'd be amazed how easy it is to move heavy, awkward objects with three pieces of PVC pipe ... the hole into the board. Take ...

We may receive a commission on purchases made from links ... of young children -- for example using old soda containers, PVC pipe, and plastic bags as components of water-based bottle rockets.