5. Mistakes to avoid

Think of a partial lack of weld on a part as the result of the geometry of your tooling or the material.

Observe your machine, this type of defect in a weld often originates from a bad return or high-frequency leaks:

• Close all HF returns: safety devices installed by the manufacturer;

• Clean all contacts with copper-based conductive grease (oxidation is an insulator for HF);

• tighten screws, bolts, etc. on your machine (clean contacts are essential);

• change the broken foils with exactly the same dimensions (length, width) so as not to change the characteristics of your machine.