Professional Jeweler Archive: General Jewelry Repairs Using ABI's Mini Pulse Arc III

October 2004

Professional Bench/Welding Technologies

General Jewelry Repairs Using ABI's Mini Pulse Arc III

Knowing how to tack-, fusion- and pulse-arc-weld at the bench saves time, increases quality and drives up profits in your shop and service department

This article covers routine repair and assembly projects accomplished using ABI’s new Mini Pulse Arc III.
This cast platinum setting has a significant and noticeable pit located on the under gallery wire as indicated by the arrow.
I use a small ball bur to open and round the pit, then insert a small platinum bead into the rounded depression.
After some experimenting with voltage and power level settings, I use 50 volts at power level 4 with the #2 tip to melt the bead into the rounded depression. I hook the contact pad to the negative terminal and the weld pencil to the positive terminal.
The electrode is recessed about 1mm into the ceramic collar. I hold the collar about 1/2mm away from the bead and use about six pulses of energy to complete the welding.
These earrings have prongs for back setting gemstones. In the setting process, two of the four prongs cracked (arrows).
I reattach the prongs with the ABI Mini Pulse Arc Welder set on power level 5 and 45 volts. I hold the tip of the welding pencil about 1/2mm from the cracked area.
The cracked prongs are repaired with little or no deformation of the prongs’ shape.
To further test the parameters of the ABI Mini Pulse Arc III, I select 18k yellow gold omega clips for welding of the rivet wire.
For this procedure, I use the #1 tip, a power level of 5 and 50 volts. The rivet wires form a smooth weld. The welding process doesn’t anneal or tarnish the findings.

By Mark B. Mann

Important: Tack-, fusion- and pulse-arc equipment settings will differ and are based on the volume, amount of contact and alloy of the material you work with. Practicing using like materials will give you a parameter for the settings required for your application. Keep a record of settings and tasks for future reference.

For questions on this process, contact Mark B. Mann at or (406) 961-4426. To view related welding procedures, visit

This article is sponsored by ABI, Cranston, RI. For information on ABI equipment and procedures or for a list of distributors, call Janet Kirk at (888) 494-2663.

Photographs by Mark B. Mann

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Copyright © 2004 by Bond Communications