Inner engraving cannot be performed in glass materials.
Check whether the type of the glass you use is suitable for inner engraving. Not all types of glass are suitable for inner engraving; for instance, tempered glass, laminated glass, and deeply tinted glass may not be engravable. It is recommended to use our official materials for inner engraving.
Ensure that the actual dimensions of the glass are consistent with the dimensions set in the software.

Ensure that the processing mode you select is Inner Engraving.

If there are still no marks, you can perform Inner Engraving Z-Axis Calibration to ensure the Z-axis focal length is accurate, and then try engraving again.
Should the issue persist after completing the preceding steps, submit a ticket via the "Submit a Ticket" button in the "Help Ticket" section below. The standard response time for xTool Customer Service is one business day.
For a prompt resolution, please include the following details:
This information is crucial for xTool technical support engineers to provide timely assistance.
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