[FarmCraft101] put his incredible craftsmanship on display, and learned a few new things in the process, by scratch building a scale replica bronze cannon and carriage. Starting with a sufficient ...

You don’t need any of that chemical nonsense to just have fun, though, as this compressed air cannon from [OtisLiu153] demonstrates. The build uses PVC pipes for both the barrel and the air tank.

Working in a shed on Sydney’s North Head, the Harbour Trust’s “Heritage Restoration Volunteers” built a replica carriage for a bronze 6-pounder cannon that dates back about 230 years ...