How to Cut Metal With MAPP Gas
MAPP gas is a generic name for UN 1060, which is stabilized methylacetylene propadiene. MAPP gas has replaced acetylene in many venues in recent years because it is easier and safer to work with. The heat produced by a MAPP torch is not as hot as an acetylene flame, but can reach temperatures of up to 5,300 degrees Fahrenheit. This is hot enough to safely solder, braze, weld or cut metal when used in conjunction with oxygen. Professionals using MAPP torches can cut through thick metals of one to 3 inches, but the novice user will most likely have problems with metals this thick.
- Gloves
- Mask or goggles
- MAPP torch with oxygen and MAPP gas
- Cutting tip
- Metal
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Instructions
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1
Ensure a cutting tip is in place on the MAPP gas torch. Twist to the right to ensure it is properly secured.
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2
Prop your metal in a vertical or near vertical position. Put on your gloves and eye protection.
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3
Turn on the MAPP gas and start the flame. Five pounds of gas is a good starting point for novice users.
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4
Open the oxygen tank to about 20 pounds. Watch the flame and slowly turn up the oxygen until the flame is longer than the thickness of your metal.
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5
Begin to run the flame along an area of the cut line that is 1-2 inches long. Continue for several minutes until the metal begins to melt and run. Repeat until the entire cut has been made.