05/09/2026
Why does CNC chatter happen?
That annoying vibration during machining isn't just a noise.
It can lead to poor surface finish, tool wear, dimensional inaccuracies, and even damage to the tool.
Here are 5 things to check:
⚙️ 1. Tool overhang
The longer the tool sticks out, the more it can deflect and vibrate.
🔩 2. Workholding
A poorly secured workpiece can turn a stable cut into a vibrating one.
📈 3. Cutting parameters
Speed, feed, and depth of cut all affect machining stability.
🔧 4. Tool geometry
The wrong insert or tool geometry can increase cutting forces.
🏗️ 5. Machine rigidity
The machine, setup, tooling, and workpiece all form one machining system.
Good machining isn't only about removing material — it's about controlling the process.
What is the first thing you check when you hear chatter?
