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Propane Cutting Instructions

Propane torches can be used to cut sheet metal in much the same way a MAPP or acetylene torch can. The fuel creates a flame that heats up the metal; then a constant stream of oxygen blows the melted metal from the cut. Propane does not burn as hot as MAPP gas or acetylene, but can be used for many of the same purposes. Because the flame is not as hot, it often takes longer to cut metals with propane.

Things You'll Need

  • Oxy/propane torch
  • Sheet metal
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Instructions

    • 1

      Close the torch adjustment valve on the side of the torch, and hold the nozzle away from you. Twist the valve on the propane tank to the left to open the flow of propane. Ignite the torch, and adjust the flame to 10-15 psi using the torch adjustment valve.

    • 2

      Open the flow of oxygen on the oxygen tank valve to 20 psi.

    • 3

      Hold the torch 6-8 inches from the metal, and run the flame across an area several inches long until you see the metal begin to puddle. If the metal is not being blown from the cut by the oxygen, slowly increase the flow to between 30 and 40 psi.

    • 4

      Continue moving the propane torch down a few inches at a time until it is cut. It may take several minutes for each new area to heat up and begin to melt.

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