A harmonic vibration that occurs when a cutting tool bounces against the material being worked. It creates a loud squealing noise and leaves a distinct, rippled pattern on the finished surface. Machinists must adjust their speeds, feeds, or tool rigidity to eliminate it.
I'm getting too much chatter on this turning pass, so I need to slow the spindle speed down.
Chatter ruins both the surface finish of the part and the lifespan of the cutting tool.
Related terms
Same word, different worlds
Rapid, violent opening and closing of a relief or check valve that hammers the disc against the seat.
Machine Shop SlangSelf-sustaining vibration between tool and work that screams, leaves a wavy pattern and kills tools.
ElectrotechnologyRapid repeated opening and closing of relay or contactor contacts, usually from marginal voltage or vibration.