Professional Jeweler Archive: Preparing the AllSet to Cut Bearings in Prongs

May 2005

Bench | Tool Tips


Preparing the AllSet to Cut Bearings in Prongs

Foredom's AllSet® Master Stone Setting Kit helps you cut consistent bearings for an in-line bracelet

By Mark B. Mann


This article explains how to set up the Foredom AllSet® Master Stone-Setting Kit for the stone setting project featured on page 87.

1. The kit has prong, pavé and channel-cutting guides and a fixture that attaches to a Foredom No. 30 handpiece. It can be set up many ways for a variety of setting tasks.
2. Two parts hold the AllSet attachments to the No. 30 handpiece. I begin by attaching the body (A), hooking it over the collar of the handpiece opposite the chuck key opening.
Next I attach the AllSet holding collar (B) perpendicular to the handpiece and tighten the two set screws with the supplied Allen key.
3. I select the proper setting bur for the project and match it to the appropriate-size prong guide. Of the 13 available, I want the one that offers minimal clearance between the bur and the inside diameter of the guide. I attach the prong guide (C) to the L bracket (D).
4. I insert the shaft and L bracket into the body.
5. After the shaft is inserted, I tighten the shaft locking screw (E).
6. Next I insert the setting bur and lock it in the No. 30 handpiece using the chuck key.
7. Finally, I adjust the depth of the cut using the shaft adjusting nut (F).

I like the cut’s depth to allow the top of the gemstone to be slightly below the tops of the prongs before bending them. I experiment with a couple of settings and make the final adjustment. Next I bur all bearings, one after the other, using the Foredom Model TX Flexshaft at a medium low speed with plenty of lubrication. The AllSet takes less than two minutes to assemble for this project.

This installment of Tool Tips is sponsored by Foredom, Bethel, CT. For information on Foredom tools, equipment and accessories or for a list of distributors, contact Michael Zagielski at (203) 792-8622 or sales@foredom.com. Information about these and other Foredom accessories is available also at www.foredom.com. Click on the “Accessories” page.

Photographs by Mark and Lainie Mann
Visual Communications, Inc. © 2005

This information is provided without warranty, either expressed or implied. The procedures can be harmful if not executed properly and are undertaken at the reader’s own risk. The author and publisher are not responsible for injuries, losses or other damages that may result from use of this information.

Copyright © 2005 by Bond Communications