Gas Seal for 2in Potato Cannon
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This is a gas seal designed to launch projectiles out of a potato launcher, or spud gun, that has a 2 inch barrel.
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This is a gas seal designed to launch projectiles out of a potato launcher, or spud gun, that has a 2 inch diameter barrel. Print with 100% infill for better chance of reuse after a launch. After you print it, put some tape around the outside tabs. The gas seal is slightly smaller than the diameter of a 2 inch barrel, but when you put tape around the tabs, it becomes larger than the barrel and the tabs will flex so that it makes a really good seal against the barrel. I put two layers of scotch tape and it works great.
Ideal use is when shooting something that doesn't make a very good gas seal on its own such as a golf ball or a small lime. Some good projectiles to print and use with this gas seal are my lollipop stabilizer fins with a lollipop glued in: https://www.thingiverse.com/thing:3667154 and this crazy jumbo pellet: https://www.thingiverse.com/thing:3667173
Instructable on how to make a spud gun coming soon! I'll put the link here as soon as I finish it.
UPDATE: I added a chamfer to the rim of the gas seal and it slides in a lot easier while still creating a good seal. The new version is called Gas Seal V2.
Print Settings
Infill:
100
Category: DIY