23
LAYOUTOPERATION
TUNGSTEN PREPARATION
1. Use a dedicated grinding wheel
or contamination may result. Do
not breath grinding dust! Wear eye
protection and gloves.
2. Hold Tungsten rmly.
3. Grind perpendicular to grinding
wheel face. Allow tungsten to grind
away slowly, creating point.
4. Rotate tungsten quickly as it is
being ground to keep point even
and symmetrical.
DO NOT GRIND TUNGSTEN
PARALLEL TO WHEEL FACE
ORAN UNSTABLE ARC WILL
RESULT.
<50A
>50A
2.5 - 3 X Φ(Diameter)
Use a point for low amp use to
help control arc. Create a slight
truncation on the tip for higher amp
use for best arc stability.Grind the tip
so that it is2.5-3 times longer than
the tungsten is wide (Diameter).
DO NOT BALL TUNGSTEN. An
ERRATIC ARC MAY RESULT.
MAKESURE GRINDING MARKS
RUNPARALLEL AND IN LINE
WITH THETIP. CONCENTRIC
MARKS WILLCAUSE AN ERRATIC
ARC.
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