I don't need people teaching me about surface area and weight disbursment or what not. Just looking to make some extra cash. Live in a fishing town and one of the most common things people need here is a gaf hook/bouy catchers. They sink when they fall overboard. I want to make custom made ones and somehow make them float and charge double. Except what are some good ideas to make them float? Welding wont really allow them to be "water tight". And im wondering if maybe foaming the inside of the tubing will do anything?. Anyone got good ideas, post them, all ideas are good ideas. Thanks.
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Originally posted by Winter Welding View PostI don't need people teaching me about surface area and weight disbursment or what not. Just looking to make some extra cash. Live in a fishing town and one of the most common things people need here is a gaf hook/bouy catchers. They sink when they fall overboard. I want to make custom made ones and somehow make them float and charge double. Except what are some good ideas to make them float? Welding wont really allow them to be "water tight". And im wondering if maybe foaming the inside of the tubing will do anything?. Anyone got good ideas, post them, all ideas are good ideas. Thanks.
Griff
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Oh, THAT's what he meant by you can't weld a cell shut and it has to let air push out. Well, yes, you can weld a cell shut and watertight. It's just a matter of technique and practice.
There is also the option of sealing the end with a very tight rubber plug. In the HVACR industry we routinely buy copper lines, coils, and compressors that have a rubber plug that holds the pressurized nitrogen storing charge.
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I just got done welding up a water tight cube made from stainless steel. No reason you can't weld up both ends of an aluminum tube. I made six aluminum cubes a while back, 4"x4", water tight. In fact I put water inside of them before I finished the last weld. I also back purged with argon, which helps. A lot.
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If you are not capable of welding it water tight then weld an aluminum pipe coupling on each end, then screw a pipe plug in with sealant. On second thought since your welds aren't water tight that won't work. How about threaded pipe and then a threaded cap, no welding involved.MM250
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