Intermediate Stone Setting
Tube Setting Faceted Stones
When beginning to do tube settings, the first thing anyone should do is buy a “Setters Tube Holder” which appears in many tool supply catalogues. I have two of them for easy access.
Expose only the very top of the cullet in the tube holder. It will grip securely and will prevent the sides from collapsing while preparing the item for setting. The clamp holder has seven sizes of chucks so that you can pick the chuck that will hold the cullet securely as you worked on it. Insert your jewelry carefully and tighten very securely! Then place the diamond on top and check if there is enough metal protruding around the diamond to securely set it. If not, spread the top open with an awl.
Next start the cutting for the pavilion seat using a #156c undercutting bun that is about 112 to 314 the size of the stone size. Make a bearing low enough so that the table of the stone will be flush with the top of the bezel. Cut the bearing with slight increments of cutting so that it takes about 4-5 series of cuts to make the seat. Once this is accomplished, try to place
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