[Jewelry making - Article 00040] - Re: [Orchid] Scratches polishing with 3m wheels

[Peter W . Rowe]

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>     I've had good luck previously using my 3m radial discs to polish
>     my work after sanding, but it isn't working now. 

    are your radial disks getting a bit worn? Especially if you use them
    with more than slight pressure, they can get "dulled". Properly,
    only the tips of the bristles should contact the work. If you press
    harder, it works at first, but the bristles are then wearing down on
    the flat sides of the bristles, not the tips. That makes them thinner
    and reduces their effectiveness. 

    On the other hand, if you're having these reduced results using new
    bristle disks when new ones before worked, I'd suggest looking at
    whether the metal is annealed the same way, and whether whatever
    steps you take before and after the bristle disks is the same. 

Peter

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