Knowledge
Practical LightBurn guides, settings, testing workflows and troubleshooting — written for real workshop use.
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9 articles
Full-Wrap Rotary Engraving: Managing the Seam
A full wrap must close geometrically and physically after one circumference; scale error, object taper, slip and start-position error accumulate at the seam.
Rotary Y-Axis Soft Limits and ALARM:2
A Y-axis rotary can command more virtual Y travel than the flat-bed `$131` limit permits, causing ALARM:2 even though the rotary physically has no flat Y boundary.
Rotary Diameter, Circumference and Scale Errors
A wrong diameter/circumference/steps relationship stretches or compresses output around the object. Measure the relevant physical diameter and verify with a known-size test.
Rotary Setup: Chuck vs Roller and What Changes
Roller and chuck rotaries translate motor motion to surface travel differently. Correct setup depends on rotary mechanics, object diameter/circumference and controller axis configuration.
Camera Not Available: Windows Permissions and Device Access
When LightBurn cannot see a camera, the problem may be operating-system privacy permissions, another app holding the camera, drivers or USB bandwidth — not calibration.
Camera Overlay Shift: Fast Diagnosis
Overlay errors can come from stale capture, mechanical movement, incorrect calibration/alignment or material height differences. Pattern matters: uniform shift differs from nonlinear distortion.
Camera Alignment: Map the View to the Laser Bed
Camera alignment establishes the relationship between the corrected camera image and real workspace coordinates; hardware movement can invalidate that relationship.
Camera Lens Calibration: Distortion Before Alignment
Lens calibration corrects optical distortion; alignment maps the corrected camera view to the laser workspace. They solve different problems and should not be treated as one calibration.
Multi-Camera Workflow in LightBurn 2.1
LightBurn 2.1 expands camera support, including multi-camera workflows and a redesigned setup/control experience; each camera still needs correct lens/alignment context.