[Jewelry making - Article 01190] - Re: [Orchid] High speed spindle

[Todd Welti]

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>     I have retrofitted my Roland MDX-20 with a Proxxon LB/E 28485 and
>     could not be more pleased. Quiet, powerful and accurate. I run it
>     at about 12-13000 rpm, it tends to melt the wax if you go too fast
>     but it is easy to adjust. 

    I hadn't htought about the wax metlting. The Taig I have does 11,000
    RPM. I had though that I could go to 20,000. I understand the
    potential benefits of a higher RPM are: 

    Can move the endmill faster for a given chip load (does "chip load"
    even apply to a profiler on wax?!?) Easier to vary speed (instead of
    existing pulleys) Perhaps a cleaner finish... ? 

    But will i melt the wax? I use a .004 or .007 profiler, and purple
    wax (though thinking about green).
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