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Discussion Starter · #1 ·
Hi I am trying to solder a piece of copper end cap to an aluminum pot cover to make a water distiller .
I am using lead free silver soldering wire. I am having a hard time soldering the materials together , could it be the Flux ?
Suggestions plz. Or am I just idiot.
 

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Actually, aluminum can be soldered, but is not easy because when it contact with air, it forms an oxide layer that is tough to get through.

Do a Google search for "soldering aluminum to copper" and you will find a couple of products that are intended for this application.
 
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