[Jewelry making - Article 00083] - Re: [Orchid] Finishing Inside Rings

[LSHancock]

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Mike,

    My suggestion for inside of rings is a couple of split mandrels for
    the flex shaft and a number of wooden dowel rods wrapped with varied
    grits of sandpaper. I use paper from 180 grit down to 4/0. Tape the
    sandpaper to the dowel and then secure the ends with either tape or
    rubber bands. You can cut strips of sandpaper to wrap around the
    mandrels or recycle the less used sandpaper you remove from the dowel
    as it becomes worn. Start with a heavy grit paper wrapped around the
    split mandrel for quick removal then use the next grit down on the
    dowel sanding as you would with a hand file. Continue switching from
    flex shaft to dowel, moving down to the next grit on each apparatus
    until you have a surface that will accept a tripoli finish (with
    silver or gold this will probably be a 400 to 600 grit paper, for
    platinum you'll need to keep going til you've reached a 4/0 or 1200
    grit finish). By doing this attentively you will never remove too
    much, or too little material from the inside of the ring. If,
    however, you only use rotary tools you will probably notice that when
    you do your final buffing you have lines that run right around the
    entirety of the ring. This is caused because it's hard to tell if
    you've really taken out all the scratches made by the heaviest grit
    paper. But by sanding perpendicularly between grits you will always
    be able to tell when you've removed the proper amount of metal.  

Larry 
psychotically obsessed with perfect finishes

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