This weekend my oldest son and I built ten marshmallow guns (that shoot mini-marshmallows). The design is similar to that shown at http://www.instructables.com/id/Marshmallow-Shooter/.
The parts are all 1/2 inch PVC (and all unthreaded).
For one blaster:
- caps (2)
- elbows (2)
- tee joints (2)
- tube 12″
- tube 6″
- tube 3″ (5)
For the tubes, we purchased three ten-foot tubes, which was enough for 10 guns.
The only tool we purchased was this BrassCraft 1-1/4-in PVC Cutter, which worked great and can be used indefinitely.
Technique
Originally, I was loading the mini-marshmallow in the barrel, which was a mistake. The marshmallow should be loaded in the mouthpiece. Despite my initial skepticism, this is by far the best way to load the marshmallow.
Mike says
July 3, 2018 at 9:20 amIt starts innocently with marshmallows. But they’re just the gateway. Before you know it it’s potatoes and then pumpkins.
Sal Ferrarello says
July 3, 2018 at 10:05 amMarshmallows are the low-key version, as opposed to when we were teenagers and built a potato gun (full disclosure to other readers, it was Mike’s idea and I’m forever grateful). Based on this timeline, I’m not sure when pumpkins come into play – perhaps once our respective children are old enough we can launch them as part of a “science project”.