/feeds — CNC Feeds & Speeds
Work out spindle RPM and feed rate for a milling cut from the cutting speed, tool diameter, flute count and chip load. Pick a material to load typical carbide starting values.
RPM = (Vc × 1000) / (π × D) · Feed = RPM × Z × fz. These are starting points — tune by ear, chip colour and finish. Reduce feed for full-width slotting.