Just in time for fall… here’s the PVC water gun I designed and built:
It’s powered by air pressure, which is created by the water pressure in the garden hose. It cost about $10-12 to build. Full instructions are available on the project page.
The good news is, this time of year, some of the parts are on clearance at the home improvement stores. Build one today, and be ready for the jack-o-lantern smashing kids this Halloween!