cutmaster 39
OPERATION 4T-8 Manual 0-4976
Optimum torch travel speed is dependent on current
setting, lead angle, and mode of operation (hand or
machine torch).
Current Setting
Current settings depend on torch travel speed,
mode of operation (hand or machine torch), and the
amount of material to be removed.
Lead Angle
The angle between the torch and workpiece depends
on the output current setting and torch travel speed.
At 80 amps, the recommended lead angle is 35°. At
a lead angle greater than 45° the molten metal will
not be blown out of the gouge and may be blown
back onto the torch. If the lead angle is too small
(less than 35°), less material may be removed, re-
quiring more passes. In some applications, such as
removing welds or working with light metal, this
may be desirable.
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