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| Soldering copper |
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| Mike K:
How reasonable is it to construct a box out of flattened copper plumbing tubing and joined with plumbing solder? It won't hold pressure, but I do want it to keep out rain. Is the use of silver solder just for pressure applications? |
| Sea.dog:
If that's all that you have, then use it. Soft solder will be fine and need a lot less heat. Make sure that you use lap joints or, if you've enough metal, folded lap joints. |
| Mike K:
Oh, I was just going to do 90* butt joints. No good? I don't have a sheet metal brake. |
| awemawson:
It’s all about surface area of the joint. Conventionally copper ware joints would be castellated like a box joint if laps or folds weren’t possible. |
| Sea.dog:
Since I've no idea of the intended use or size of the piece, I can't say whether or not a butt might work. |
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