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AJM Magazine asked me to perform a comparative analysis of three welding systems performance in several different precious metal welding applications. I was to analyze the PUK 2 spot welder, which was developed by Lampert Tools USA Inc. and supplied to me by SEP Jewelry Tools of Chicago; the Mini Pulse III from Aelectronic Bonding Inc. (ABI) in Cranston, Rhode Island; and a laser welder. (I used my Starweld by Rofin-Baasel, which I purchased from Manufacturing Technologies in San Diego , but the results presented in this article are accurate for most laser welders used in the jewelry industry.)... (2005) Complete Story
If, like me, you consider yourself a successful photographer, you may be skeptical about products on the market that promise to improve your jewelry photos. I had a recent opportunity to review one such product, the MK Gem eBox, a light box designed to aid in the process of digitally photographing jewelry, by MK Digital Direct in San Diego. Since I always jury-rig my stage, I was prepared to dismiss the Gem eBox as technological overkill—an expensive alternative to the bed sheet tenting I have always done.... (2004) Complete Story
Heat treatment changes the microstructure of a metal or alloy. It is a process that may be applied after casting, or during or after fabrication. Since mechanical properties, such as strength, ductility, hardness, and toughness, and chemical properties, such as corrosion resistance, are in part dependent on microstructure, heat treatment can have a profound effect on them. There are a variety of reasons for heat treating gold, including, but not necessarily limited to, the following: To ease polishing, reduce wear and damage on the finished surface, increase strength, and increase corrosion resistance. Heat treatment can also be used to increase ductility after work hardening or to impart a springy quality to components such as money clips, catches, and clasps..... (2005) Complete Story
Our castings can be flawless, our assembly precise, and our settings secure -- but let any surface go a bit rough, a little uneven and wobbly, and the jewelry is judged to be inferior. Ironically, even the ultimate finish begins to deteriorate as soon as a piece of jewelry leaves the showroom. But to attract a willing buyer at a fair price, a piece needs be in top form when it enters the showroom. The tools, tips, and techniques presented in this article can help manufacturers avoid the harsh criticism that can result when a less-than-perfect finish clouds the public view.... (2006) Complete Story
