[Jewelry making - Article 01486] - Re: [Orchid] Delicate Bur Work

[john]

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    The faster the cutter goes, the smaller/thinner "bite" it can cut per
    revolution thus a much smoother and more controllable cut can be
    made. Also if the burr is not forced into the material, the burr
    should stay cooler than if were running slower and taking a bigger
    bite each cutter revolution. Dentists are using 100,000 - 200,000
    rpm units as less heat (for patient and cutter/bit), smoother cutting
    and more control. 

John Dach
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