A buddy gave me an aluminum pot that has a crack in the bottom of it. I took it thinking i could easily "patch" it. I'm really not sure what to use on it. JB weld or ? Would that contaminated the water? I plan on using it to heat sparge water.
That went way over my head, my skills in that area peak at sweating copper. I think if I decide to do that I'll just find a local welding shop.kladue said:You would need a aluminum coupling or pipe nipple, likely source would be a aluminum rigid conduit coupling. Dont try the parts made from zinc alloys as they have the same melting point as the brazing rod and will just melt. The aluminum brazing rod will not stick to stainless steel so dont waste your time trying to stick stainless parts to an aluminum pot. Here are a couple types of aluminum brazing alloys, Harris AL-BRAZE 1070, Harris 52, and Uniweld UNI-4200, use of an aluminum brazing flux will help to promote capillary action with the brazing metal flowing into the joint instead of just covering the joint.
kladue said:if you have a propane/Mapp turbo torch, get some of the self fluxing aluminum brazing rod at a welding supply store or search the internet. Buff the area with a stainless steel wire brush, heat with torch flame, and wipe the brazing rod until it melts and flows over the crack.
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