Turning troubleshooter · Chips
Chips too short, hard or hammered
Tiny chips that fly, weld together or hammer the edge; the cut sounds harsh and inserts chip early.
Likely causes
- Feed too heavy for the chipbreaker
- Nose radius small for the feed
- Entering angle near 90°, making the chip thick
What to change
Fixes both makers give come first. Change one thing at a time, and see what it does.
- 1
Lower the feed, or pick a chipbreaker made for heavier feeds
Sandvik · Mitsubishi
- 2
Use a larger nose radius
Sandvik · Mitsubishi
- 3
Use a holder with a smaller entering angle (more lead), 45–75°
Sandvik · Mitsubishi
- 4
Take a lighter cut
Mitsubishi
- 5
Try it dry
Mitsubishi
- 6
Prefer a single-sided insert with a more open chipbreaker
Sandvik
Work it out
- Turning speeds & feeds — a starting speed, feed and depth for your insert
Often comes with
Sources
Written in our own words from each maker's troubleshooting guide.