[Jewelry making - Article 00562] - Re: [Orchid] Making a sphere

[James Binnion]

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    Are you going to make just one sphere? You can make tooling to
    create a hemisphere with a Bonnydoon press but the cost of having it
    made will not be trivial. 

    A dapping set is probably not going to work very well just because
    you will not find one with a 3" opening. Your blank for a hemisphere
    will be 2.8" in diameter and to dome it up without cutting into the
    surface you will want the disk to fit into the opening in the dapping
    block. And you will want several steps between the first opening and
    the final 2" diameter opening. I haven't seen a dapping set in this
    size just some with one or two holes and punches in that size range. 

    If you have both a dapping set with a 2" hemisphere and a matching
    punch and a Bonnydoon press you can use a combination of contained
    polyureathane blocks and the dapping set. I have a sphere I made a
    few years ago that is about 1.75" using the press with the contained
    blocks and a dapping set 

    You can raise it, hemispheres are tough but it can be done. 

    Your best method may be to find a metal spinner and have the
    hemispheres spun. I have used Paul Wiley
    http://www.paulwileyspinning.com for a project and he does good work.
    You can also learn to spin and do it yourself but you will need a
    lathe and some time to learn the process 

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550
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