Raycraft is the marking software used with Cloudray UV Pro series machines for inner engraving applications.
For users who are preparing to create 3D inner engraving inside crystal, understanding the basic Raycraft workflow is an important first step before processing. This guide introduces the main operation process for 3D inner engraving, including confirming the field lens size, creating a new project, importing a 3D model, adjusting the model size and position, setting engraving parameters, using autofocus, previewing the engraving area, and starting the engraving process.
For the complete step-by-step video tutorial, please watch the YouTube guide here: Raycraft 3D Inner Engraving Tutorial
1. Confirm the Field Lens Size
Before creating the engraving job, first confirm that the field lens size is set to 80 mm.
Go to Advanced > Area and check the current field lens size. If the displayed size is not 80 mm, go to Device Information and turn off Use Field Lens B.

This step helps ensure that the software engraving area matches the actual working field of the machine.
2. Create a New Project
Launch the Raycraft software and click New Project in the upper left corner of the interface.
Starting with a new project helps keep the model file, engraving layout, and parameter settings organized before processing.

3. Select 3D Mode and Import the 3D Model
Select 3D Mode before importing the model file.
Then import the 3D model that needs to be engraved inside the crystal. Raycraft supports common 3D model formats, including .stl, .obj, and .glb.
4. Adjust the Model Size and Position
After importing the model, adjust the size, direction, and position according to the crystal size and the desired engraving effect.
Before engraving, make sure the model is placed inside the available engraving area. The model should not be too close to the crystal edge, especially when the final result needs to show a suspended visual effect inside the crystal.
When adjusting the model, check the following items:
| Check Item | Purpose |
|---|---|
| Model size | Ensures the model fits inside the crystal |
| Model position | Keeps the engraving centered or placed as required |
| Model direction | Prevents the model from being rotated incorrectly |
| Edge distance | Keeps the model away from the crystal edge for a cleaner internal result |
5. Review the Model from Different Angles
Before setting the final engraving parameters, review the model from different viewing angles.
This step helps avoid direction errors or incorrect placement before processing. For 3D inner engraving, the final result is viewed through the crystal, so the model direction and internal structure should be checked carefully.
6. Set the Engraving Parameters
Adjust the engraving parameters according to the crystal size, and required final effect.
Common parameter items may include:
| Parameter Item | Adjustment Note |
|---|---|
| Power | Affects the visibility of internal laser points |
| Speed | Affects processing time and point formation |
| Frequency | Should be matched with the engraving effect |
| Pulse Width | A smaller pulse width can provide stronger peak energy concentration for clearer internal point formation |
| Layer or Point Settings | Affects the density and clarity of the 3D structure |

7. Autofocus
Click the Autofocus button to automatically adjust the machine to the correct focal distance.

Correct focus is important for 3D inner engraving. If the focus is not set correctly, the internal points may appear unclear, uneven, or misplaced inside the crystal.
Before starting the final engraving process, make sure the crystal block is placed flat and securely on the working platform.
8. Preview the Engraving Area
Click Preview to check the model position and engraving area before processing.
The preview step helps confirm whether the engraving content is placed correctly. This step should not be skipped, especially when working with transparent crystal blocks where placement accuracy directly affects the final visual effect.
Before engraving, confirm that:
| Check Item | Purpose |
|---|---|
| Engraving area | Ensures the model fits within the crystal |
| Model position | Prevents the engraving from being offset |
| Crystal placement | Confirms the material is aligned correctly |
| Viewing direction | Ensures the final result faces the intended direction |
9. Start 3D Inner Engraving
After confirming the model, parameters, focus, and preview area, click Mark to start the engraving process.
During processing, keep the machine stable and avoid moving the crystal or working platform. Since 3D inner engraving is formed by internal laser points, a stable setup helps maintain a cleaner and more consistent result.
After the engraving is complete, remove the crystal and check the result from different angles to confirm the 3D depth and internal structure.
Final Checklist Before 3D Inner Engraving
Before starting a Raycraft 3D inner engraving job, review the following checklist:
| Step | Check Item |
|---|---|
| Field lens setting | The field lens size has been confirmed as 80 mm |
| Project setup | A new project has been created |
| 3D mode | 3D Mode has been selected |
| Model import | The 3D model has been imported correctly |
| Model adjustment | Size, position, direction, and edge distance have been checked |
| Model review | The model has been reviewed from different viewing angles |
| Parameters | Engraving parameters have been checked and adjusted |
| Focus | Autofocus has been completed |
| Preview | Engraving area and crystal placement have been confirmed |
| Processing | Mark button is clicked only after all checks are complete |
Conclusion
Raycraft provides a clear workflow for preparing 3D inner engraving jobs with Cloudray UV Pro series machines.
By confirming the field lens size, selecting 3D Mode, importing the correct model file, adjusting the model position, setting the engraving parameters, using autofocus, and previewing the engraving area, users can complete the essential setup before processing.
For best results, always confirm the final parameter values with the actual crystal block, 3D model file, lens setup, and machine configuration before repeated or batch engraving.
