Flaking (peeling of the cutting edge surface)

?Likely causes

• In hard materials and similar cases, high thrust force puts compressive stress on the cutting edgeOne maker^[1][2]
• Peeling occurs when welded material breaks awayAgreed by 2+ makers^[1][2][3]
• Sticky material with low cutting speed, or wet cutting with interrupted cutsOne maker^[3]
• Coating is thickOne maker^[3]

✓Fixes

Cutting conditions

• For hard materials, reduce the feed and cutting speedAgreed by 2+ makers^[1][4]
• For sticky materials, increase the cutting speed and turn off the cutting fluidOne maker^[3]

Tool

• Use a thin-film (PVD) gradeOne maker^[3]
• Use larger honing and a smaller rake angleOne maker^[4]
• Prevent welding with a sharp cutter that has large pocketsOne maker^[2]

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