Longevity FORCECUT 50D - Manual (Page 21)

ForceCut 40D and 50D plasma cutters
Page 20 of 30
www.longevity-inc.com
LP-40D
Cutting Guideline Table
Cutting Methods
Different material thicknesses require different cutting techniques.

Thin material:
Start perpendicular to the work piece. It is unnecessary to angle or start
on the edge, as the arc will pass through quickly.

Medium material:
Angle the torch tip to avoid damaging the tip. Once the arc passes
through the material, you may begin cutting normally.

Thick material:
Drill a pilot hole through which to start your arc, or start on the edge of
the work piece.
Never cut material on a flat surface. Raise the work piece above the surface to avoid blow back
which may burn you or cause fires .
Real Time Arc-Curve Delay
When cutting thick materials you must maintain a steady even motion in the direction of the cut.
Moving the torch too quickly causes an arc-curve delay. An arc-curve delay can leave the work
piece with uncut sections, requiring you to re-cut those sections, which could distort or damage
the work piece.
To avoid arc-curve delay, allow the arc to pass completely through the work piece before moving
too far ahead. The arc-curve should lag not more than the thickness of the material being cut. In
other words, if the work piece is one-half inch thick, the arc curve should lag not more than one-
half inch behind the torch, as shown below.