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Position the torch to the work piece
There are two angles of the torch nozzle in relation to the work piece that
must be considered when welding.
Angle A can be varied, but in most cases the optimum angle will be 60
degrees, the point at which the torch handle is parallel to the work piece. If
angle A is increased, penetration will increase. If angle A is decreased, pene-
tration will decrease also.
Angle B can be varied for two reasons: to improve the ability to see the arc in
relation to the weld puddle and to direct the force of the arc.
Distance from the work piece
If the nozzle is held off the work piece, the distance between the nozzle and
the work piece should be kept constant and should not exceed 1/4 inch or the
arc may begin sputtering, signaling a loss in welding performance.
Tuning in the wire speed
This is one of the most important parts of MIG welder operation and must
be done before starting each welding job or whenever any of the following
variables are changed: heat setting, wire diameter, or wire type.
EXPOSURE TO A WELDING ARC IS EXTREMELY HARMFUL TO THE EYES AND
SKIN! Prolonged exposure to the welding arc can cause blindness and burns.
Never strike an arc or begin welding until you are adequately protected. Wear
flameproof welding gloves, a heavy long sleeved shirt, trousers with no cuffs,
high topped shoes, and an ANSI approved welding helmet.
1. Connect the Ground Clamp to a scrap piece of the same type of material
which you will be welding. It should be equal to or greater than the thickness
of the actual work piece, and free of oil, paint, rust, etc.
2. Select a heat setting. Refer to set up chart
3. Hold the torch in one hand, allowing the nozzle to rest on the edge of the
work piece farthest away from you, and at an angle similar to that which will
be used when welding. (See HOLDING THE TORCH if you are uncertain of the
angle at which you will be welding).
4. With your free hand, turn the Wire Speed Dial to maximum and continue
to hold onto the knob.
5. Lower your welding helmet and pull the trigger on the torch to start an arc,
then begin to drag the torch toward you while simultaneously turning the
Wire Speed Dial counter-clockwise.
6. LISTEN! As you decrease the wire speed, the sound that the arc makes will
change from a sputtering to a high-pitched buzzing sound and then will
begin sputtering again if you decrease the wire speed too much. The point
on the wire speed adjustment where the high-pitched buzzing sound is
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