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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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Unread postAuthor: blind909 » Sat Aug 23, 2008 4:44 pm

My piston didnt break, my sealing face just got ripped off. So now I have bolted it on. That should be more permanent
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Unread postAuthor: blind909 » Sat Aug 23, 2008 6:20 pm

Sorry for the double post, but now all I have to do is get a new cap And It will be ready to fire.
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Unread postAuthor: Insomniac » Sat Aug 23, 2008 6:26 pm

Nice build, and man, I feel your pain with the sealing face detaching... With my mini coaxial, I went through about 5 or so sealing faces before I found a way to make one that simply couldn't come off. Sooooo frustrating waiting nearly a day for the epoxy to cure, only for it to fail after five shots.
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Unread postAuthor: elitesniper » Sat Aug 23, 2008 6:46 pm

sealing face slipped off means it doesnt work and broken. :lol:
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Unread postAuthor: spudster80 » Sat Aug 23, 2008 7:58 pm

i had that same problem. the sealing face of one of my previous pistons came off when i shot it and it hit me in the face :oops:
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Unread postAuthor: Insomniac » Sat Aug 23, 2008 8:11 pm

Wait just one minute! HOW could the sealing face possibly hit you in the head?????? The face can't get behind the piston and go out through the pilot, so it either stays in the gun, or flys out the barrel when it detaches... surely you didn't look down the barrel... and fire it.. :shock:
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I wonder how much deeper the ocean would be without sponges.
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Unread postAuthor: blind909 » Sat Aug 23, 2008 8:12 pm

Seems like sealing faces are a problem with everyone, not just me, what a relief. And I dont think it will come off now, because I did Bolt-Nut-Sealing face-Nut-Piston.
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Unread postAuthor: elitesniper » Sat Aug 23, 2008 8:30 pm

You should also add a small washer.
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Unread postAuthor: iisthemuffin » Sat Aug 23, 2008 8:31 pm

I dont know if youve seen others but just throw a big washer on it and you will be fine. Try to get a washer that fits just about perfect inside your barrel. Maybe about a cm or two between the washer and your barrel so it cant suck anything in.
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Poop.
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Unread postAuthor: CasinoVanart » Sat Aug 23, 2008 10:32 pm

blind909 wrote:Seems like sealing faces are a problem with everyone, not just me, what a relief. And I dont think it will come off now, because I did Bolt-Nut-Sealing face-Nut-Piston.


Not me! I have not had one problem with sealing faces over five cannons! hehehe
Good luck with finding the perfect one mate.
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Unread postAuthor: blind909 » Sun Aug 24, 2008 12:50 am

CasinoVanart wrote:
blind909 wrote:Seems like sealing faces are a problem with everyone, not just me, what a relief. And I dont think it will come off now, because I did Bolt-Nut-Sealing face-Nut-Piston.


Not me! I have not had one problem with sealing faces over five cannons! hehehe
Good luck with finding the perfect one mate.


Already have. The piston is completely done. I have Bolt-Nut-Sealing Face-Nut-Piston, and I even tried pulling it off, and it still wouldnt come off, so its good now, and I will add a little epoxy just to stregnthen it a little.
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Unread postAuthor: spudster80 » Sun Aug 24, 2008 1:08 am

Insomniac wrote:Wait just one minute! HOW could the sealing face possibly hit you in the head?????? The face can't get behind the piston and go out through the pilot, so it either stays in the gun, or flys out the barrel when it detaches... surely you didn't look down the barrel... and fire it.. :shock:


it bounced off my ceiling really fast
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Unread postAuthor: spudster80 » Sun Aug 24, 2008 1:48 am

sorry this is off topic, but im a noob and dont know where to post this. How do you get a thumbnail image to upload properly. i keep just getting an x when i try to upload it.
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Unread postAuthor: blind909 » Sun Aug 24, 2008 1:05 pm

spudster80 wrote:sorry this is off topic, but im a noob and dont know where to post this. How do you get a thumbnail image to upload properly. i keep just getting an x when i try to upload it.


You cant right now, I PMd PCGUY, and he hopfully will fix it, I just uploaded it from picoodle.com, and uploaded it as a thumbnail. But you will have to wait to use the spudfiles preview uploader.
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Unread postAuthor: blind909 » Sun Aug 24, 2008 9:27 pm

I have just got a new cap for it today, And Instead of black, it is Bombay Mohogany. It looks real nice. And instead of glueing it, I bolted it on, with some caulk on the joint between the end of the cap, and the pipe, so I will stop leaks, and Can be easily removed.
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