Professional Jeweler Archive: Arbor Press

April 2002

Professional Bench/Tool Tips


Arbor Press

Using an arbor press for hallmarking enhances your product's overall appearance


A quality marking on a piece of jewelry is an impression that identifies its precious metal alloy. U.S. law requires that when a quality mark is used, a trademark must be present also. Hallmarking, as the process is often referred to, is an important step in the manufacturing process.

A hammer and a steel punch comprise the standard method to apply the quality and trademark impressions. However, the results are often incomplete, difficult to read and poorly aligned. To guarantee evenly deep and readable impressions on his jewelry, Wayne Lenkeit modified an arbor press for his steel marking stamps. By taking advantage of the leverage the arbor press provides, Lenkeit consistently achieves deep, readable impressions, adding to the overall quality of his finished workmanship and products.
Lenkeit’s modification incorporates a socket that fits into the sleeve of the arbor press (A) while holding the steel stamp securely. Then he laces the item to be marked over a lead block and applies leverage (B). This creates the desired impression. The benefits of using the arbor press over a hammer and steel stamp are that pressure is applied evenly and the impression is properly aligned and appropriately deep.

– Mark B. Mann, Director of Trade Programs, Jewelers of America

Featured application by JA® Certified Master Bench Jeweler Wayne Lenkeit, Lenkeit Manufacturing, Temecula, CA

Photographs courtesy of Jewelers of America

© 2002 Jewelers of America

Copyright © 2002 by Bond Communications