Re: [CAD_CAM_EDM_DRO] High speed spindle chuck

In a message dated 14-Dec-00 22:13:11 Central Standard Time, cnc4me@...
writes:

> The spindle itself does not seem to hard to make. Bearings rated for
> 30K RPM or so are easy to find in catalogs.
>
> PCB Drills are pneumatic, use "air bearings", and turn up to 150,000 RPM.

Will "peck" a hole in 10 milliseconds. Drill 4 or 5 holes per second,
including "traverse"! See dentist hand-piece! Some serious precision and
speed, there!


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