[Jewelry making - Article 01511] - Re: [Orchid] Polishing agatized dinosaur bones

[John Donivan]

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>     That sounds like Cerium Oxide. I prefer to use Tin Oxide on a
>     split cowhide for dino bone polishing 

    I thought there might be more on this today form our lapidaries. My
    first thought on this post was the #1 most common mistake new cutters
    make, is being in too much of a hurry. Every step must be complete in
    polishing stones, and the harder the material is the more it matters.
    Novices tend to grind and then go to 600 and sand until it looks
    "pretty smooth", and move on. If your stone looks fogged, it could be
    that another compound is better, as above. Look at the surface under
    magnification - if you see fine, deep down scratches then you aren't
    spending enough time on the prep, and the next phase will not get rid
    of it - every step must be complete. In which case backtrack a step
    or two and spend some more time there. You don't just sand down to
    the scratches, you must sand THROUGH them. Maybe it's that, maybe
    it's tooling and compound. 

http://www.donivanandmaggiora.com
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