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Fully working cannon
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Very fun cannon for not only luching potatoes but plastic projectiles too.
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Ideas
- License
- Creative Commons — Attribution — Noncommercial
Material: PETG
Additional parts:
- 1,5mm copper wire for electrodes
- aluminium tube with internal diameter of 23mm and external diameter of 25mm (you can use plastic or other kind of tube but with matching dimensions)
Fuel:
I use hair spray but you can use hydrigen or other flammable gas.
Print settings:
Print with 4 walls and at least 35% infill for strength because it need to withstand high pressure gas from combustion.
Ignition:
I use cheap high voltage generartor from Aliexpress.
Note:
On the picture you can see shorter version that was a prototype.