Rotary Attachment Simpler NEMA17(42BYG) for CO2 Laser Engraver Engraving Machine

Stepping motor:NEMA 17(42BYG). FIRST ,Turn on the laser power switch,(the laser head moves all the way to the left and the rotary spins at max speed ). Second ,Follow the picture below，Drag the laser head and manually to theupper left corner,(The laser head moves to the left,then drag X axis to upper ,Touch the two stepper limit switch ),purpose,Identify the rotation axis.

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