Longevity FORCECUT 42i - Manual (Page 14)

ForceCut 42i 110v/220v PFC 40amp Plasma Cutter
14
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.