If the top sheet is too thick, the arc cannot cleanly burn through to reach the supporting frame, resulting in an inadequate bond. Weld Quality Indicators
The most surprising fact? Puddle welding has been used in — just under a different name.
Puddle welding relies on a controlled, high-current electric arc to melt the materials rapidly. It is typically performed using Shielded Metal Arc Welding (SMAW/Stick) or Gas Metal Arc Welding (GMAW/MIG) equipment. 1. Striking the Arc