Things You'll Need:
- Torch (propane) Flux Solder Tube cutter Sandpaper
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Step 1
Cut the copper tubing to length with a tube cutter. Make a turn with the cutter, adjust the size down with the knob, and repeat.
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Step 2
Use the sandpaper to remove any and all burrs and rough edges of the copper tubing.
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Step 3
Apply flux to both pieces of copper tubing to be soldered. Only the inside of the larger tube and the outside of the smaller tube need to be coated. Apply an even and thin coating of flux. Connect the pieces to be soldered.
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Step 4
Ignite the torch and turn up the propane until the flame burns strong with a blue tint.
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Step 5
Move the flame around the connected parts, allowing them to heat evenly. Watch for the flame to change from blue to more green in color. Do not use solder at this point, as you are only heating now.
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Step 6
WIth the flame opposite you, touch the solder to the joint of the copper tubing. The heat of the tubing should draw the solder into the joint. If not, reheat with the torch and try again. Maintain the flame opposite of the solder point of contact with the tubing.
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Step 7
Allow the tubing to cool completely before testing with movement. The solder will need several minutes to cool and set.
