[Jewelry making - Article 00673] - Re: [Orchid] Running true on tapered spindles

[Wayne Emery]

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>     Does anyone know of a trick to threading felt buffs on tapered
>     spindles so that they run true? 

    I start with an oversized buff. Get it on the mandrel as best I can,
    then file it down carefully ay high speed. This will cure the
    out-of-balance condition. After that, the buff is left on that
    mandrel until it is too worn to be of use. You can also borrow some
    ideas from the carvers: Get a small piece of maple or lemonwood or
    pink ivory from a wood-turning hobbyist supply shop. Cut a slice
    about half an inch thick. Using a hole saw, cut a round piece of a
    diameter you feel appropriate, maybe a little larger. With a drill
    press, cut a 5/32 to 7/32" inch hole at the approximate center.
    Using a STEEL 3/16 to 1/4" bolt, screw on a small nut, your wooden
    disc, than another nut to tighten it down. Make sure you have the
    hand tool set to rotate in a clockwise direction looking from the
    tip of the tool towards the hand piece. This will make sure the nut
    does not spin off and become a projectile. Clamp ypour hand piece in
    the vise, horizontally, turn it on medium speed, and use a fine wood
    rasp to turn the piece of wood true. It is now balanced. Then, soak
    the wood in olive oil for a couple days. Now, apply a paste of 3000
    grit diamond dust/olive oil to the wood. As you use it, it will take
    up more diamond grit, using it a medium slow speed. Once it becomes
    Charged, it will be very effective, last a long time and need
    occasional re-charging. 

    Or you can do the same starting with an over-sized buff, various
    diamond grits do an excellent polishing job on gold and silver, but
    they will also cut quickly if you don't watch it. 

    In my shop, we polished all 14 yellow with a soft buff to which a
    light mixture of oil and 14,000 grit diamond had been
    applied.....very sparingly. Super polish, super fast. I don't know
    why more folks don't use diamond, it works quickly. 

Wayne

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