Laser stops in middle of cut on large file

Master Laser 2, engraving large file. The laser works well but stops at same point and machine shuts off. What are some possible causes? I’m running windows 10 machine.

Update, I fixed this issue by grounding the frame of the laser. No problems after that.

Thanks for your feedback in resolving the issue. Many people do not really believe in the importance of a proper electrical grounding, but you too are proving that it really does matter.

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