Tweco 25mm Cutmaster - Manual (Page 39)

CUTMASTER 25MM
Manual 0-5080 OPERATION
4T-5
Shield Cup With Straight Edge
The drag shield cup can be used with a non conduc-
tive straight edge to make straight cuts by hand.
WARNING
The straight edge must be non - conductive.
A-03539
Non-Conductive
Straight Edge
Cutting Guide
Using Drag Shield Cup With Straight Edge
The crown shield cup functions best when cutting
3/16 inch (4.7 mm) solid metal with relatively
smooth surface.
Drag Cutting With a Hand Torch
Drag cutting works best on metal 1/4" (6 mm) thick
or less.
NOTE
For best parts performance and life, always
use the correct parts for the type of operation.
1. Install the drag cutting tip and set the output
current.
2. The torch can be comfortably held in one hand
or steadied with two hands. Position the hand to
press the Trigger on the torch handle. With the
hand torch, the hand may be positioned close to
the torch head for maximum control or near the
back end for maximum heat protection. Choose
the holding technique that feels most comfortable
and allows good control and movement.
4. Keep the torch in contact with the workpiece
during the cutting cycle.
5. Hold the torch away from your body.
6. Slide the trigger release toward the back of the
torch handle while simultaneously squeezing the
trigger. The pilot arc will start.
A-02986
Trigger
Trigger Release
7. Bring the torch within transfer distance to the
work. The main arc will transfer to the work,
and the pilot arc will shut off.
NOTE
The gas preflow and postflow are a character-
istic of the power supply and not a function
of the torch.
3
4
Art # A-03383
Trigger
2
1
Trigger Release
8. Cut as usual. Simply release the trigger assembly
to stop cutting.
9. Follow normal recommended cutting practices as
provided in the power supply operator's manual.
NOTE
When the shield cup is properly installed,
there is a slight gap between the shield cup
and the torch handle. Gas vents through this
gap as part of normal operation. Do not at-
tempt to force the shield cup to close this gap.
Forcing the shield cup against the torch head
or torch handle can damage components.