[Jewelry making - Article 00179] - Re: [Orchid] Turning Speeds and Angles for Platinum

[John Donivan]

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>     I have prepped my tools well with a good finish using the standard
>     angles prescribed for harder metals 

    As so often happens, you hit the send button and go off and say,
    "Wait a minute.....". What I said in the other post of this was
    mostly correct, except for the insert designation is iffy. I have a
    good stock of them, and have to refresh my memory whenever I get into
    the numbers. For aluminum, the fourth letter is "T", which is an
    extreme rake, which also gives a very sharp edge. The point being
    that aluminum tooling has a steep, sharp edge - look at milling
    cutters, too, to see it. A good place for all of this is
    http://www.carbidedepot.com Both for buying and knowlege. On the
    right side is a link to "technical resources", also application
    support. Lot of good stuff there... 

http://www.donivanandmaggiora.com
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