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How to Braze Copper Art

Brazing joins two pieces of metal, typically copper, using a filler metal and high heat. Brazing utilizes higher temperatures than soldering, typically between 1,100 to 1,500 degrees Fahrenheit. This creates a stronger bond which is less prone to gaps or leaking. Often soldering is just as effective for art applications, but brazing is by some artists simply because they prefer the technique. Brazing is routinely used in water supply lines, gas distribution, with some medical gases and in HVAC units.

Things You'll Need

  • High heat torch
  • Filler metal
  • Safety glasses
  • Fire-proof gloves
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Instructions

    • 1

      Slip one piece of the copper tubing into the coupling, or into the other tube. Make sure the joint is overlapped by at least an inch for the strongest bond. The space between the pipes should be no more than 0.6 millimeters.

    • 2

      Put on your safety glasses and gloves. If a flux will be used to prevent oxidation, paint it onto the joint before you begin heating the metal.

    • 3

      Hold your torch at a 45-degree angle to the joint, and slowly move it around the joint. Hold the blue flame against the metal, heating it to a minimum of 1,100 degrees Fahrenheit.

    • 4

      Insert the filler metal into the joint while continuing to move the torch around the pipes and joint. Capillary action from the heat will pull the filler metal into the joint.

    • 5

      Ensure the joint is filled with filler metal all the way around. Remove the heat, and allow to cool fully before handling.

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