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1. Workpiece: Make sure workpiece is clean before welding.
2. Work Clamp: Place as close to the weld as possible.
3. Electrode: Before striking an arc, insert an electrode in the electrode holder. A small diameter
electrode requires less current than a large one. Follow recommendations of the electrode
manufacturer when setting weld amperage.
4. Insulated Electrode Holder.
5. Electrode Holder Position
6. Arc Length: Arc length is the distance from the electrode to the workpiece. A short arc with
correct amperage will give a sharp, crackling sound. Correct arc length is related to electrode
diameter. Examine the weld bead to determine if the arc length is correct. Arc length for 1/16
and 3/32 in. diameter electrodes should be about 1/16 in. (1.6 mm); arc length for 1/8 and 5/32
in. electrodes should be about 1/8 in. (3 mm).
7. Slag: Use a chipping hammer and wire brush to remove slag. Remove slag and check weld bead
before making another weld pass.
• Weld current starts when electrode touches workpiece.
• Weld current can damage electronic parts in vehicles. Disconnect both battery cables before
welding on a vehicle. Place work clamp as close to the weld as possible.
• Always wear appropriate personal protective clothing.
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