Printed from Kezuriba (kezuriba.net/en/troubles/chips-short/)

Chips are too fine, scatter, or stick

Turning and milling Turning

Check first

Feed is too large
Corner radius is small
Chip breaker's effective range is small

Try first

Reduce the feed and depth of cut
Increase the corner radius
Use a smaller lead angle (larger side cutting edge angle)

?Likely causes

Feed is too largeAgreed by 2+ makers^[1][2]
Corner radius is smallAgreed by 2+ makers^[1][2][3]
Chip breaker's effective range is smallOne maker^[2][3]

✓Fixes

Cutting conditions

Reduce the feed and depth of cutAgreed by 2+ makers^[1][2]

Tool

Increase the corner radiusAgreed by 2+ makers^[1][2][3]
Use a smaller lead angle (larger side cutting edge angle)Agreed by 2+ makers^[1][2][3]
Use a breaker suited to high feed and with a matching effective rangeAgreed by 2+ makers^[1][2]

Coolant

Use dry cuttingOne maker^[2][3]

↔Related problems

Chatter (vibration)Rough, torn, or fuzzy finished surface Dimensions vary or are out of tolerance Built-up edge forms Chips stretch long or tangle Chips clog or jam (milling, end milling)Burrs appear (turning, milling)Edge chipping (workpiece edge breaks off)

📚Sources

Causes and fixes are summarized in our own words from cutting-tool makers’ troubleshooting guides and technical data. “Agreed by 2+ makers” means two or more makers say the same thing.

Sandvik Coromant — Troubleshooting in turning sandvik.coromant.com
Mitsubishi Materials — Turning troubleshooting mmc-carbide.com
Mitsubishi Materials — Advanced Turning: Troubleshooting mmc-carbide.com