Can You Solder a Copper Joint?

You can easily solder a leakfree copper solder joint on the first try—but you can also make mistakes. ... Also buy either “tinning flux” (Photo 5) or “paste flux.” The flux acid-cleans the copper surface as you heat the joint, enabling the solder to flow evenly. Both types work well.

Can you overheat copper pipe when soldering?

Overheating is a major problem when brazing or soldering copper pipe because the flux will burn (become oxidized), stop working, and become a barrier to tinning. In addition, a heavy oxide can be formed on the pipe itself, preventing a bond from forming between the filler metal and the pipe surface.

Do copper solder joints fail?

The only way a joint can fail is if it is not made properly, whether it is because the solder did not flow properly or the pipe was not inserted all the way into a fitting. It has nothing to do with turbulence because the solder does not interact with the liquid flow.