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  • slapdick

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    20230603_150502.jpg


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    Made this small black powder cannon, 12 gauge shell for scale. I had a section of high pressure tubing and welded a plug on the end, bored a hole on top, and welded studs to the side.

    The "carriage" is just something crude I put together for now, I plan on making something nicer for it in the future.

    This also doubles as a picket pounder for fence posts.

    I'm wondering if I should make a pirate "swivel gun" style mount for it or something else.
     

    slapdick

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    I'm wondering 3 things
    What type of projectile fits in it..IE: softball, hardball, beer cans?
    How much powder will it take to shoot it?
    Will peices of those pine 2x4's be easy to pick out of your torso?
    1. I think a red bull can would fit. Definitely nuts, bolts, marbles, etc.
    2. As much as it takes
    3. Not a concern, I don't plan on standing that close to it.
     

    oldwing

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    slapdick

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    It may be safer to use as a post driver. It could end up as a pipe bomb. Before shooting this you might check out the minimum standards set for construction of bp cannon. BP cannons and mortars are great to shoot but be safe. Hereis a link to standards. https://www.go2gbo.com/threads/safe-loads-construction-new-cannon-builders-design-standards.69739/
    It would 100% be safer to use as a post driver.

    I used E-70s to weld it which is good for 70,000 PSI tensile strength, the tube itself has 95000 psi tensile strength, and with a 4 oz of powder + the size of the bore, shouldn't ever reach higher than 6000 psi with this.

    I'll see if I can upload the video of it being test fired.
     

    ammodave

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    Many yrs ago when I was at La Tech the engineering dept made a half size civil war cannon to fire at football games when we scored a TD. It blew up (split open) on the 2nd shot.
     
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