How to calibrate laser Z height
thingiverse
Human: How to fine-tune laser Z height precision\ 1. Command laser head to return to its origin using G28, placing an A4 sheet flat on the worktable\ 2. Activate the laser (in my setup, this is achieved with M42 P44 S255)\ 3. Move the laser head to X=180, Y=180, Z=45mm (my maximum Z height is 45 mm), adjusting movement speed as needed\ 4. Deactivate the laser (at this point, consider returning to Z=0 to establish a second burn point)\ 5. Measure the distance from start to finish of the burned line\ 6. Calculate the optimal Z height based on the illustration
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