Cutting Sheet Metal (Steel)

To cut sheet metal (up to 1/4" thick)

for thicker material see Thick Steel

We use 2 tips - The top tip for heating, and the bottom for cutting - the oxygen. On the trigger, the arrow faces up.

To cut sheet metal we use the undercutter.

For this material, push the torch away from you with a steady hand across the surface, touching the surface with the oxygen tip. (do not watch flame - keep your eyes on the oxygen tip)

nice cut!! - very little slag

very little warpage or distortion

a cut as nice as a plasma cutter

General

• The maximum thickness of steel (with the undercutter) you should attempt is 1/4".
• 1/8" and thicker will require preheating.

• attach the under cutter
• 22 to 18ga use the #1 tip on the weld point and the #0 on the undercutter
• 16 ga to 1/8" use the #2 tip on the weld point and the #1 on the undercutter
• 1/4" use the #2 tip on the weld point and the #1 or the copper on the undercutter - you may have to experiment to get the right combination.

• use 4 to 4 1/2 psi on acetelyene and

• adjust oxygen pressue depending on thickness of material to cut.

• for 22 ga. to 18 ga. use 4 1/2 PSI
• for 1/8" use 6 PSI
• for 1/4" use 8 to 10 PSI
• if a 50' hose is used, increase your pressure 1 to 2 psi (see setting up the torch)

• Use a neutral or just off feather with trigger depressed
• See setting up torch

• When cutting 1/8" or thicker steel - always preheat.
• Start at the far side, heat surface red, pull trigger and slowly push torch across surface away from you.
• Drag the oxygen tip - watching the tip and not the flame.
• Metal needs to be red only when STARTING cut.