Originally Posted by
tom_fiddler
WOW I would have thought that would have broke.
What RPM?
Looks great
Thanks
The spindle is set to Mhz. I had a base line of 4500 Rpm @ 300 Mhz and 1500 Rpm @ 100 Mhz approx. It cut best at 186Mhz on the spindle control. The overall trick to cutting with such a small dia bit is plunging down half the depth of the length of cut. The bit has a 1/4" length of cut and I was cutting a single pass depth of 1/8" from the surface of the material. I had large chips that evacuated the heat. One issue i had was the chip build up on the pressure foot. It was melting the plastic unless it was cleared properly with the air.
I don't always indulge in evil scientific research...but when i do. I make the parts on a ShopBot.
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