[Jewelry making - Article 01164] - Re: [Orchid] High speed spindle

[Harry Hamill]

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Todd,

    I'd stay away from air spindles. Noisy and you'd need a continuous
    supply of clean, dry air which isn't always easy to supply. 

    Proxxons are used somewhat in milling machines, and they work, but I
    don't think they are the best solution. The runout is fair and they
    aren't really designed for continous use although for a hundred
    bucks, they'll do a decent job. 

    You can also swap out the stock spindle in your Taig to a higher
    speed, greater accuracy one like these: 

    <edit> ebay link removed. please no ebay links on Orchid !! </edit> 

    Either use the stock motor as is, increase the speed by changing the
    pulley setup or swap it with a DC motor and speed control. You can
    buy DC scooter motors cheap on Ebay with a control. 

    You might not need to go to 20K anyway if you're milling wax, I run
    my NSK at 12K, it gives a better finish than at 20.

Harry
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