How to Solder Copper Pipe

To solder copper pipe together, whether you want to continue straight or choose to make it turn, you must choose the appropriate fitting (elbows, Tee's, 45's, or couplings.

Sand the outside of the pipe and the inside of the fitting. Put flux (a paste like substance) on the sanded areas.

Roll out solder (it looks like wire on a spool); about 8-9 inches. Put the pieces of pipe to be soldered together into the fittings.

Light the torch. You want to put the flame on the fitting, not the pipe.

Hold the flame about half an inch below the fitting for 15 to 30 seconds.

Touch the solder to the top of the pipe at the fitting. The heat will cause the solder to melt, flow between the fitting and the pipe holding the two parts together. Let cool.

WARNING: All pieces must be soldered at the same time. Heating one after the other will mess up the one you have completed.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• copper pipe
• copper fittings
• flux
• solder
• torch
• sandpaper (plumbers)

1. To solder copper pipe together, whether you want to continue straight or choose to make it turn, you must choose the appropriate fitting (elbows, Tee's, 45's, or couplings.

2. Sand the outside of the pipe and the inside of the fitting. Put flux (a paste like substance) on the sanded areas.

3. Roll out solder (it looks like wire on a spool); about 8-9 inches. Put the pieces of pipe to be soldered together into the fittings.

4. Light the torch. Hold the flame about half an inch below the fitting for 15 to 30 seconds.

5. Touch the solder to the top of the pipe at the fitting. The heat will cause the solder to melt, flow between the fitting and the pipe holding the two parts together. Let cool.

Tips & Warnings

• You want to put the flame on the fitting, not the pipe.
• If you are uncomfortable, you may want to wear protective gear. I find it gets in my way, but better safe than burned.
• All pieces must be soldered at the same time. Heating one after the other will mess up the one you have completed.