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Tool Talk Discussion Forum

Welding copper?

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KIP in MX

10-30-2012 21:32:51
190.213.42.208



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Anyone welded copper sheet? I want to make a copper tank/base for an Aladdin kerosene lamp from copper sheet and want to weld the seams. I have oxy/acetyline and Mig/Tig equipment. I don't want to use lead solder. Best advise?




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Puddles

11-01-2012 15:38:40
24.113.77.208



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 Re: Welding copper? in reply to Stan in Oly, WA, 10-30-2012 21:32:51  
Seems as I remember T_Bone talking about welding copper, I'm sure it was when he worked at Coors. Can't remember if he e-mailed me pictures of it or not. I know he really like to talk about welding aluminum with oxygen & acetylene. I'm gonna have to give both of these a try some day!
Don't know about you guys, but I sure miss that guy! One of the most knowledgeable men on the subject of welding I ever knew. 8)

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Stick welding

11-01-2012 19:44:33
96.53.210.246



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 Re: Welding copper? in reply to Puddles, 11-01-2012 15:38:40  
T_Bone said he was green from welding the big copper tanks at Coors. I think he said it takes lots of heat which makes sense because it conducts heat better than aluminum.



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Bud in WV

11-01-2012 15:27:11
173.80.76.241



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
I welded some copper buss bar and some copper nickle pipe years ago....it ain't pretty!
It takes a LOT of heat and it doesn't flow - at all! You can't "push" it with a TiG torch like steel, either. The "prettiest" Cu weld I've ever seen looked worse than a 2 hour beginner with a cold 7018.
Do yourself a big favor and solder it.



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greygoat

10-31-2012 08:51:17
184.158.78.91



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
Silver Solder, is it safe for food grade?



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Stick welding

10-31-2012 22:23:32
96.53.210.246



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 Re: Welding copper? in reply to greygoat, 10-31-2012 08:51:17  
You can get cadmium free silver solder but check if it's rated for food service.



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cd1

10-31-2012 07:23:44
67.234.196.64



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
why not solder, it's easy, cheap and pretty strong.



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Butch(OH)

10-31-2012 07:19:36
70.62.13.146



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
I have some bronze stick welding rod in the shop and it says it is good for copper.



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JDseller

10-31-2012 06:30:53
208.126.196.144



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
Here is another video of a guy brassing copper, sheet,rods and lap joint.



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casenut1

10-31-2012 06:02:45
107.8.39.45



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
that was 1/4 inch , looks easy. lets see it done with sheet copper , say 26 or 28 gauge. that's what i work with , bet it distorts all over the place.



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Puddles

10-31-2012 01:52:23
24.113.77.208



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 Re: Welding copper? in reply to showcrop, 10-30-2012 21:32:51  
Interesting video! Until now I've never seen it done. Years ago when I worked as a weldor out of the sheet metal union I worked with several guys who had built copper hoods for commercial kitchen, the way they talked was just like the guy in the video, no big deal to Tig weld copper. I have also heard of using electrical wire, but also remember reading sometimes it can cause problems, but can't remember what! :oops:

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Stick welding

10-30-2012 22:39:28
96.53.210.246



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
TIG or silver solder will work. O/A might work but have never heard of it being used on copper. You might be able to find some info on the internet.



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JDseller

10-30-2012 22:28:26
208.126.196.144



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
Kip: Here is a link to a guy TIG welding copper. It is pretty neat. I had never seen it done before.



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Bus Driver

10-31-2012 04:41:13
66.226.40.31



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 Re: Welding copper? in reply to JDseller, 10-30-2012 22:28:26  
I have brazed copper with oxy/acetylene. Works well. Never used TIG equipment. Interesting video.



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timcasbolt

10-31-2012 04:16:05
72.23.207.250



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 Re: Welding copper? in reply to JDseller, 10-30-2012 22:28:26  
He said it took 200 amps to get it going. That's a lot of heat!



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JOB

10-31-2012 01:57:20
74.36.129.154



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 Re: Welding copper? in reply to JDseller, 10-30-2012 22:28:26  
He did not tell you that welding copper the way he did gives off fumes that are not good for you. You need good ventilation to weld copper.



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casenut1

10-30-2012 22:01:02
107.8.39.45



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 Re: Welding copper? in reply to KIP in MX, 10-30-2012 21:32:51  
have never seen anything but solder on copper.



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