[Jewelry making - Article 00508] - Re: [Orchid] Turning Speeds and Angles for Platinum

[patpruitt]

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>     The best tools for cutting platinum are PCD poly- crystalline
>     diamond or diamond tipped. They will give a good, bright cut but
>     cost quite a bit and are easy to damage and still don't get great
>     working life on platinum but the cut quality is quite good. 

    Might also check into TiB2 coated tooling, a recent article in CNC
    magazine (http://www.haascnc.com/CNCMag/PDF/v11i39.pdf) talks about
    the comparison vs diamond like coatings when cutting aluminium, but
    might fair well with platinum. Not to sure on the availabiltiy of
    this as of yet. 

    I would also recomend using an oil based lubricant to do your
    cutting and run pretty high rpms, taking small cuts. 

P AT 
www.patpruitt.com
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