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the best way to bond coppper and aluminium

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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the best way to bond coppper and aluminium

Unread postAuthor: ALIHISGREAT » Fri Oct 19, 2007 2:51 am

what is the best way to bond them? i'm not sure if solder would work and i need to bond them for my bb cannon.
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Unread postAuthor: jackssmirkingrevenge » Fri Oct 19, 2007 2:57 am

good quality epoxy, 'nuff said
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Unread postAuthor: TurboSuper » Fri Oct 19, 2007 6:54 am

jackssmirkingrevenge wrote:good quality epoxy, 'nuff said


^that
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Unread postAuthor: ALIHISGREAT » Fri Oct 19, 2007 7:00 am

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Unread postAuthor: dapallox1 » Fri Oct 19, 2007 7:11 am

I have an old tube of steel expoxy. You just take it out, mix it around on the threads, and then connect it together. I've only done it on steel though, should work with copper. But in other words, epoxy is your best bet. Check your local hardware store.

EDIT: What you found in that link is similar to what I have.
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Unread postAuthor: TurboSuper » Fri Oct 19, 2007 7:13 am

Actually, now that I think about it...threaded fittings would be ideal...but epoxy is the way to go if you don't have threaded fittings.
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Unread postAuthor: ALIHISGREAT » Fri Oct 19, 2007 7:36 am

the epoxy is for fixing an 8mm aluminium tube inside a 15mm copper tube, i will probably use wooden disks to centre it then epoxy it in.
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Unread postAuthor: jrrdw » Fri Oct 19, 2007 8:56 am

So you need something that bonds wood to metal?
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Unread postAuthor: ALIHISGREAT » Fri Oct 19, 2007 9:11 am

no, the wood is just to centre the barrel then i will mould the epoxy funnel the air into the barrel.
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Unread postAuthor: jrrdw » Fri Oct 19, 2007 5:00 pm

I used Bondo to fill the muzzel end inbetween my barrel and shell/cover, it's a 1" in a 2", then just sanded to shape. Bondo sticks like crazy, and is solid as a rock. Maby try that, if it don't work, it's easy enough to remove.
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