This is a quick HOW TO on operating your VFD controlled spindle using the UCCNC interface with the MDI field. 24,000 RPM is the max rate on the spindle. We never cut anything with the spindle less than 16,000 rpm even though the spindle can get as low as 12,000 RPM.
How to Properly Change your CNC Bits
Avoid mistakes, save your bits