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My gun needs to be lighter Need material info

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: archie370 » Fri Oct 19, 2012 6:40 pm

Hey yeah bud I've thought of that ... But there's a problem I need a Tig welder for that unless you change the gas that the mig has from argon and co2 to pure argon ... That's all I know
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Unread postAuthor: Zeus » Fri Oct 19, 2012 6:47 pm

No, there's new rods around for normal SMAW welders, they've got a certain flux. I don't use $50 splatterboxes, but I've heard they work pretty well.
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Unread postAuthor: battlelava » Fri Oct 19, 2012 9:59 pm

Being in welding school I would suggest mig with a spool gun and 100% argon or tig weld with some 4043(I think) rods. Aluminum stick rods cost a ton and aren't easy to use, especially if ur not good with stick welding


What's the thickness of the metal
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Unread postAuthor: archie370 » Sat Oct 20, 2012 1:04 am

Ah I think it's a couple of ml ... It's a aluminum fire extinguisher and I need to weld a fitting on it for my air chamber ... I'm gonna pop rivet the frame instead of welding it with aluminum
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Unread postAuthor: Crna Legija » Sat Oct 20, 2012 7:28 pm

alu welding rod are a real [female doggy] to weld with and i wouldn't trust the strength of them, you also need a pretty power full welder or one with arc control.
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Unread postAuthor: archie370 » Sat Oct 20, 2012 7:43 pm

Yeah mate we'll I'm an alright welder but I'm not great I'm not going to talk my self up and stuff it up ... I think I might have to find another approach to my air tank ....
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Unread postAuthor: Zeus » Sat Oct 20, 2012 7:43 pm

Here's an idea, use the SMAW sticks, but flood the area with Ar while you weld.
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Unread postAuthor: battlelava » Sat Oct 20, 2012 8:06 pm

Zeus wrote:Here's an idea, use the SMAW sticks, but flood the area with Ar while you weld.


It be cheaper to just find someone to weld it for u. And it would be much stronger if you don't have the proper skills
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Unread postAuthor: archie370 » Sat Oct 20, 2012 8:12 pm

I can weld alright I'm just not a prof .... And first I need a bottle of argon which will cost a lot .... I'm thinking now I should just get a big fire extinguisher which is steel ... Weld a fitting on it then just get some high pressure hose then hook my air gun up like that then the airgun it self is light ... Then put straps on the f e for my back ... Or would that be bad ...
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Unread postAuthor: Zeus » Sat Oct 20, 2012 8:25 pm

Not suggesting you do it mate, just a brain fart. And at the least you'll need a MIG for decent airtight welds
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Unread postAuthor: battlelava » Sat Oct 20, 2012 9:09 pm

Zeus wrote:Not suggesting you do it mate, just a brain fart. And at the least you'll need a MIG for decent airtight welds


Don't have to have a mig. Just have to know what your doing so you don't get pinholes. If its not more then 1/8 thick. I wouldn't attempt to use stick. Nothing like blowing holes through it because its the wrong process for the job. Don't get me wrong you can stick weld sheetmetal but you gotta be pritty damn good. Personally this sounds like a tight job with some 4043 rods so its nice and strong and crack resistance
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Last edited by battlelava on Sun Oct 21, 2012 12:51 am, edited 1 time in total.
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Unread postAuthor: Fnord » Sun Oct 21, 2012 12:04 am

Durafix/Alumaloy.

Don't count on it to be as strong as a weld, but it's close. Really glob it on thick if you're making a pressurized joint. It's stupidly easy to use and seals airtight with no effort at all.
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Unread postAuthor: archie370 » Sun Oct 21, 2012 3:13 am

Well Thank you guys for all the help and the input with my shitty design ... but hopefully i will have it up and running in no time :) ...
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