The operator does not have to wear a face shield or mask because the machine generates no ultraviolet rays or welding fumes.
No qualifications or notifications on welding are required either as it is not subject

to the Ordinance on Prevention of Hazards Due to Specified Chemical Substances.

Conventionally, argon gas arc welding, which generates ultraviolet rays and welding fumes that are harmful to health, has been the most common method.

The MOLHEI generates no ultraviolet rays or welding fumes so the operator does not have to wear a face shield or mask. It allows the exact target point to be welded as no thermal shrinkage or deformation is generated, and the electrode is applied directly to the welding positions.

The machine requires no special skills, either, which enables molds to be repaired at the company.