Chip Thinning Calculator
Radial chip thinning + entering-angle compensation for milling.
Optional: calculate table feed (IPM)
Radial engagement
10.0%
Compensation factor
1.67×
Radial factor
0.600
Lead-angle factor
1.000
Actual max chip thickness
0.00300 in
Programmed table feed
120.0 IPM
Below 50% ae: radial chip thinning applies50% ae or more: radial factor = 1.000
Radial factor: Kr = √[1 − (1 − 2ae/D)²]
Combined factor: Kr × sin(entering angle)
Actual chip thickness: programmed IPT × combined factor
For complex high-feed insert geometries, use Seco Suggest/tool-specific data when available.
Quick reference
Example: 0.500" cutter, 0.050" ae = 10% engagement. At 90°, the radial factor is 0.600. If you program 0.005 IPT, actual max chip thickness is about 0.003".
Reverse mode: enter the chip thickness you want and the calculator returns the IPT to program.