Accurate focus and calibration can make the preview picture stitching more accurate and make the engraving position consistent with the preview position.
Test Items :
1. Confirm the correct plane of focus :
Double click the “Autofocus” button to allow the motorized work table to rise and let the probe automatically touch the surface of the engraving material.
Every time you change the material of different thickness, you need to lower down the work table and do the autofocus again to ensure the correct focus. When engraving, if the focus is not correct, the laser beam will be thicker than the laser beam with correct focus.
Thicker object : When the object is thicker or when the rotary add-on is used, the side of the object may be captured by the camera, and only the objects on the plane of focus can be stitched together, and the picture out of focus and inaccurate stitching caused by the height difference is normal. Be sure to focus on the surface of the engraving material and the highest point of the engraving material when using the rotary add-on.
2. Complete camera calibration (left of below pictures) :
After exposing to shock and vibration of transportation, optical path alignment, and Reset to Factory, etc., all need to be recalibrated. The calibration steps are as described in【Beam Studio Tutorial】Step 2 (p.057).
There are two calibration objectives:
a. The red square must be located in the center of the calibration window.
b. The outside of the red square must be aligned with the center square of the grid lines.
3. Confirm the calibration result (right of below pictures) : Draw a square at (X,Y) = (77.5mm, 77.5mm) with a width W and height H of 25mm and make sure the square overlaps with the center square of the grid lines. If it does not fit, refocus the paper and recalibrate the camera.
Troubleshooting Records :
1. Image file : If there is still a discrepancy between the result and the preview position after using SVG file and confirming the correct plane of focus and accurate camera calibration, please provide the SVG file to the your reseller and let the engineering team assist.