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Melkor's Marble Cannon

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Melkor's Marble Cannon

Unread postAuthor: PCGUY » Sat Feb 05, 2005 6:08 pm

<div align="center">MARBLE CANNON

Provided By - Melkor

Yet another marble gun, nothing too special or unique, but in my opinion it's a good, cool-looking gun. This is an inline pneumatic. The 2"x12" sch40 PVC chamber is used as a stock, and the 1" modified sprinkler valve is connected to a blowgun which serves as a trigger and gives it a rifle-like feel. The barrel is 1/2" sch40 PVC. A 0-160 PSI pressure gauge and a schrader valve are tapped into the 2" coupler. A red-dot scope which I bought off eBay is mounted on the valve. When using similar marbles and a constant pressure, this baby can get pretty accurate... ;-) A rough calculation with GGDT shows that this gun fires at about 600 feet per second with 120 PSI.

Provided By - Melkor</div>
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marble2.jpg (13.61 KiB) Viewed 11493 times
marble1.jpg
marble1.jpg (8.08 KiB) Viewed 11493 times
Last edited by PCGUY on Fri Mar 10, 2006 11:51 pm, edited 1 time in total.
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Unread postAuthor: theexp » Sun Feb 06, 2005 4:52 pm

That looks really really cool. I don't know why tho. BUt i like it alot. IT reminds me of something.


What type of handle are you using, cuz it doesn't look like any blowgun i've seen
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Unread postAuthor: jdp204 » Tue Mar 08, 2005 4:36 pm

yes, what type of hanlde is that? i want it
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Unread postAuthor: PCGUY » Tue Mar 08, 2005 4:48 pm

That looks like a garden hose handle...
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Unread postAuthor: BC Pneumatics » Tue Mar 08, 2005 6:29 pm

Or a pressure washer, but the size of the outlet and the piece of hose to atach it make me think garden hose.
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Unread postAuthor: miniman » Sat May 07, 2005 7:02 pm

yeah, I want to make a bbmg and that would be sweet! just like a real rifle!

I have a mini with that same size barrel but only about 10 of my bag of 50 marbles fit!
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Unread postAuthor: aetherguy881 » Wed May 18, 2005 6:44 pm

I live it i will probobly make it myself
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Unread postAuthor: true2blue92 » Tue May 31, 2005 12:57 am

I have a handle very similar to this one. I got it at a local hardware store called Harbor frieght. They dont really have brand named stuf they make their own. What it really is made for is a pump for a tire. mines i little different but to me it looks really close here is a pic
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Unread postAuthor: spudshot » Tue May 31, 2005 3:59 am

it looks close, but the one you have may not accept air pressure throught the hose (though it should) try blowing into the hole the hose was in and see if it holds pressure or if it leaks through the bottom hole.
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Pistol Blowgun

Unread postAuthor: Rudesill Ballistics » Mon Jun 13, 2005 7:53 pm

I have something similar to that called a DG-10.

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I even filed the top into a sight grove.

I didn't know it worked through the top too, I thought they only worked through the bottom, guess I was wrong.
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Unread postAuthor: spudshot » Tue Jun 14, 2005 6:39 am

some only work from the bottom, others can hold pressure both ways
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Unread postAuthor: Rudesill Ballistics » Tue Jun 14, 2005 7:24 pm

^ Okay thanks for clarifying! :D
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Unread postAuthor: kto » Thu Jun 23, 2005 9:43 pm

very very nice cannon
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Unread postAuthor: xxphilxx » Tue Jul 12, 2005 7:04 pm

how did u mount the 3/8 scope thing?
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Unread postAuthor: spudshot » Tue Jul 12, 2005 8:02 pm

from what i can tell he just took some rail mounts, and zip tied them onto the valve
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