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Jeremy Cook advances the potato cannon arms race from muzzle- to breech-loading eras with this .602 caliber pneumatic spud gun prototype that fires from a high-pressure gas reservoir instead of via the familiar fuel-ignition system. He writes:

The actual sliding bolt mechanism was made from a piece of Delrin, which is a type of plastic with a very high resistance to abrasion and fairly low friction. It was also what was available to me at the time. There is a hole down the middle of it which allows air to pass through when fired. One end is tapped for 1/4 inch NPT to allow a 1/4 inch air fitting to be screwed in. The other end is cut just smaller than the inside diameter of the 1/2 inch pipe that it will be putting air into. To keep air from escaping when fired, a slot is cut for an o-ring to provide for a tight seal. Additionally, a 1/4 – 20 hole is tapped through one side to screw the [operating handle] into.

Jeremy is rigorously documenting the build on his blog. [via Hack a Day]

Sean Michael Ragan

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.


  • http://www.facebook.com/surpriseparty Tim Harris

    http://www.pukindogspaintball.com/cannons/BECC.htm
    is one of a hundred examples of this already being done.

  • Anonymous

    The SP9004 being the example I like best (all aluminum, no need to pre-prep projectiles and a letter from the ATF).

    http://www.spudtech.com/detail.asp?id=51

  • Anonymous

    Hi webmaster, commenters and everybody else !!! The blog was absolutely fantastic! Lots of great information and inspiration, both of which we all need!b Keep ’em coming… you all do such a great job at such Concepts… can’t tell you how much I, for one appreciate all you do!http://xuhanlan33.blog.com/wp-admin/edit.php

  • http://www.fastenfinder.com hex screws

    Hi,

    Thanks guys for giving information about Jeremy Cook advances the potato cannon arms race from muzzle- to breech-loading eras.

    Its really nice post guys.