Disassemble the laser, clean the main shaft and corresponding parts of the hexagonal prism motor in the laser, and apply some sewing oil on the main shaft with a medical cotton swab. About how to disassemble this machine and take down the laser, I posted a special post, but the forum judged it as an advertisement post, which could not be posted. I don't know why (I am a user of this machine, just for the convenience of posting, I guess I violated some rules). If you need it, you can send me a private message.
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