Shape of circle

Hello, I have a problem with my laser engraver. The laser is unable to cut a perfect circle; it always comes out slightly flattened and uneven. Could you please advise me on how to fix it?

Sounds like an example from our job quality troubleshooting guide: Troubleshooting: Warped Or Disconnected Lines - LightBurn Documentation

Here’s a great list you can refer to for mechanical maintenance: Guide to mechanical adjustments and maintenance

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