Manual Mill // Feed Rate Calculator

Cut.
Not Rub.

Find your minimum feed rate to actually cut material — not just heat it up.

Tool Setup

Tool Diameter

Number of Flutes

flutes

Chip Load (per flute)

0.030 mm

Recommended: 0.030–0.060 mm for this tool diameter. Too low = rubbing. Too high = broken tool.

Surface Speed

m/min

Steel: 80–200 · Brass: 100–300 · Alu: 200–600

Travel Length

Min RPM

RPM

Max RPM

RPM

OPTIMAL CUTTING CONDITIONS

Set Spindle To

—

RPM

Cross Travel In Max

—

seconds

Feed Rate (target) —

Ideal RPM (unclamped) —

Actual Surface Speed —

Chip Load Used —

Travel Window — if you finish before the bar fills, you're cutting right