[Jewelry making - Article 01663] - [Orchid] [Source] Sintered diamond burs

[Kevin]

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    I am trying to find a good source for cylinder-shaped diamond burs
    approximately 2 to 3mm in diameter explicitly for cutting opal
    doublets into the shape of Lake Tahoe for simple inlay into a gold
    mounting. The burs I've been using are just not up to the job,
    lasting little more than one seven dollar bur for one 3/4" long piece
    of finished opal outline carving. I am using a Taurus ring saw to do
    the rough outline, their slimmest blade works pretty well but leaves
    very small chips along the edges, so I stop about a millimeter from
    the edge I want and switch to a diamond cylinder bur in my
    flex-shaft, with a table that mounts to the flex-shaft handle from a
    Matt wax trimmer at right angles to the bur. I'm looking for help
    with finding the correct grit, and as I said a sintered bur I guess,
    that will last longer than what I've found so far. Any advice from
    those stone cutting brains out there would be greatly appreciated.
    Much Thanks from Lake Tahoe, Nevada where we are parched and need
    rain. 

Kevin
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