[Jewelry making - Article 01208] - Re: [Orchid] Setting - cone shaped hole

[Jack Schmidling]

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>         Not exactly. If the straight-sided hole were slightly smaller
>     than the girdle, the stone would be resting on a sharp edge of
>     metal, high on the pavilion, just below the girdle. Try to
>     visualize the sharp 90 degree angle perpendicular to the angle of
>     the pavilion. 

    But if the angle of a cone shaped hole (90deg) is smaller than the
    pav angle, they cone may look cool but the stone still rests only the
    the very edge, exactly like a straight hole of the same diameter. 

>         To set a stone in this manner would leave the girdle
>     ever-so-slightly above the surface of the metal...... 

    This is a point I missed earlier but could also be resolved with a
    follow up drill just slightly larger than the girder to the depth of
    the girdle.  It would require 3 drills and only arguably easier than
    a bur but for a beginner, requires little skill. 

>         Although a seat cut by a hart burr might not exactly match the
>     angle of the pavilion, there is going to be more "cradling" support
>     for the stone.... 

    This is where I have to disagree.  The stone rests on a circle
    unless the angle is exactly the same as the pavilion. 

js

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