The spark-spotter liner drop (cold weld failure)

Resistance welding requires both intense electric current and solid mechanical pressure to fuse the pin base to the steel panel face. Press the pin spotter tip down hard until the internal compression spring bottoms out completely, then pull the trigger.

Tools, Fasteners & Hardware 2nd Year YELLOW

Stop if

Those insulation pins are popping loose because you aren't leaning on the weld gun. Press down hard until the spring bottoms out so the electricity gets a solid structural ground weld on the steel.

Watch out

Do not force the tool through the problem or substitute the wrong tool just to keep moving.

Check

Confirm the tool matches the task, material, and gauge.
Inspect the setup before forcing the cut, weld, fold, or fastener.
Use steady controlled pressure instead of speed or brute force.
Stop if the tool overheats, jams, slips, or damages the part.
Correct the setup before the mistake turns into rework overhead.

Steps

Confirm the tool matches the task, material, and gauge.
Inspect the setup before forcing the cut, weld, fold, or fastener.
Use steady controlled pressure instead of speed or brute force.
Stop if the tool overheats, jams, slips, or damages the part.
Correct the setup before the mistake turns into rework overhead.