Re-soldering copper pipe

[Les]

I started a plumbing project and changed my mind mid-project. Is it safe to reheat a joint and turn an elbow 180 degrees? By safe, I mean, will the solder continue to provide a sound, leak-proof joint?

[Sacramento Dave]

When it's hot brush more flux on joint then add more solder.

[Toller]

Take it apart, clean it, reflux. then just resolder it. Unless there is a good reason, it is easier to use a new part; reused parts are often a problem.

Are you asking if you can just heat it and rotate it? If your joint was perfect the first time it "ought" to be okay, but I wouldn't take the chance.

[Edwin Pawlowski]

Yes. If it was done right you have enough solder and it is not exposed to air so it will not oxidize either. Take care not to overheat the joint.

[trader4]

I agree. Heat it, rotate it, and then run some more solder around the joint and it should be fine.