Hard Foam

Potatoes last one shot, so build reusable! Discuss ammo designs and ideas. Tough to find cannon part or questions? Ask here!
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Atlantis
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Mon Jul 10, 2006 2:31 pm

I was wondering if the foam that hardens is good for short range ammo, or will it be too light? What if I added a nail or something to it for weight? I plan on filling a 3 foot section of 3/4" PVC with foam and chopping the foam into small pieces once it hardens.
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Andrew52
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Mon Jul 10, 2006 2:53 pm

well i think you would want to grease the pipe thouroly with some before using the foam and i think i could drill holes and hot glue sinkers or some kind of weights in there otherwise i tihnk it would be to light
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benstern
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Mon Jul 10, 2006 3:23 pm

you mean like Great Stuff?
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)DEMON(
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Mon Jul 10, 2006 3:30 pm

Can that foam be machiened after it sets?
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Mihlrad
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Mon Jul 10, 2006 4:05 pm

i wonder if you could use that stuff to make a piston.
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Atlantis
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Mon Jul 10, 2006 9:59 pm

Well it would'nt exactly be machining it, basically just saw it into pieces. 6 bucks might be a little expensive though, there's probably a cheaper brand. You might be able to use it for a piston.
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carlbelcher
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Mon Jul 10, 2006 11:09 pm

You could probably use a piece of PVC pipe as a mold. It would make a great sabot and if you wanted to use it as a projectile you could just put something in the mold with it and let it harden around it.

Just make sure you give it plenty of room to expand, that stuff has been known to rip apart door frames and walls.
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Atlantis
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Mon Jul 10, 2006 11:44 pm

I was gonna leave both ends of the mold open, I might have to do small sections at a time depending on how fast it hardens.
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benstern
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Tue Jul 11, 2006 12:56 am

yeah it would alo be fun to shoot the CAN at a wall and see it all harden
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rna_duelers
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Tue Jul 11, 2006 7:25 am

Thats would be good for trying to get max velocity out of a gun,such as a hybrid really light but looses energy quickly just enough time to chrony it probably and make sure u use very little of it,that stuff fills up alot of space from a tiny squirt i remember my dad was making moulds for lamp shades and he half filled one and it like coverd out bench in the stuff and its quite hard on the outside and hard to rip off stuff.
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DonTheLegend
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Tue Jul 11, 2006 3:50 pm

I've tried making sabots with this stuff, and you have to leave at least one end open. Also, use a lot less than u think and do it in layers. We tried doing a 3" x 12" sabot all at once and it just pushes itself out of the pipe. Use WD-40 or something to coat the sides otherwise it'll stick, and it just ruins the pipe.
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Atlantis
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Tue Jul 11, 2006 7:25 pm

Thanks for all the advice, I might get some soon because I have to fill some holes in my grill to get rid off the wasps in it.
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schmanman
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Tue Jul 11, 2006 7:32 pm

yeah it would alo be fun to shoot the CAN at a wall and see it all harden
It explodes and sends foam like 40 feet up into the air. IT IS SWEET!!!!!!
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SpudStuff
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Tue Jul 11, 2006 8:01 pm

just think paintballs with the two part foam mix seperated by a thin layer of plastic. when you shoot some thing it bursts and mixes
Darkerweb12
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Mon Jul 17, 2006 8:50 pm

Atlantis wrote:Thanks for all the advice, I might get some soon because I have to fill some holes in my grill to get rid off the wasps in it.
Haha, kinda off topic now, but our satelite wasn't getting any channels for the longest time, and when the guy finally came we had FOUR wasp nests inside the receiver! FOUR!
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