In this tutorial, we will introduce how to convert 3D scan data captured with a Creality 3D scanner into a printable STL model through essential post-processing, and then prepare the model for 3D printing using slicing software.
¶ Typical Applications of 3D Scanning and 3D Printing
The workflow from 3D scanning to 3D printing can be applied in a variety of scenarios, including:
¶ 1. Object Replication
Create a digital copy of a physical object for reproduction or repair.
Examples:
- Restoring worn or damaged parts
- Reproducing discontinued components
¶ 2. Customization
Modify scanned models to create customized solutions.
Examples:
- Designing custom brackets for specific devices
- Creating personalized accessories for body parts such as wrists or ears
¶ 3. Reverse Engineering
Convert physical objects into editable CAD models for redesign or product development.
This typically requires professional reverse engineering software such as Geomagic or QuickSurface.
¶ 4. Rapid Prototyping and Validation
Directly print scanned models for assembly verification or functional testing, helping shorten product development cycles.
Among these applications, object replication is the easiest place to start. Simply scan the object, perform basic post-processing (Fusion, Meshing, and Hole Filling), export a watertight STL model, and import it into slicing software for printing.
For beginners, it is recommended to start with objects that have simple structure and rich geometric features or surface texture.
¶ 1. Scanning
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Select the appropriate scanning mode and configure the scan parameters based on the characteristics of the object.
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Scanning Tips：
- Capture the object from as many angles as possible to avoid missing areas.
- Keep the optimal scanning distance while scanning for high-quality point cloud data.
- If using markers, apply them randomly rather than in a regular pattern. Avoid placing markers directly on the object whenever possible, as they may interfere with texture capture.
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¶ 2. Post-processing
After scanning, use tools such as Clipping Plane, Rectangle Selection, Lasso, or Connected Components to remove unwanted background point clouds. Ensure that the model is clean, free of isolated noise, and that the main object remains complete.
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¶ One-click Processing
If high model accuracy is not required, you can use One-click Processing to automatically complete the post-processing workflow.
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¶ Manual Processing
¶ 2.1 Fusion
Click Fusion to merge multiple point cloud frames into a mesh model.
For greater detail, choose a smaller resolution. Keep in mind that this requires more RAM and increases processing time.
It is recommended to keep the Noise Removal Level at its default setting.
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¶ 2.2 Meshing
Click Meshing and set the desired number of triangles. A range of 0.2M to 1M triangles is recommended.
- Note: Models containing holes cannot be sliced or printed correctly. Enable Watertight or Hole Filling to ensure that the model is completely closed before exporting.
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¶ 3. Export the Mesh Model
Click Export Model in the upper-right corner and export the model in STL format, which is supported by most slicing software.
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¶ 4. Slicing and Print Preparation
- Open your preferred slicing software, such as Creality Print, Ultimaker Cura, or PrusaSlicer.
- Using Creality Print as an example, select File > Import and open the STL file.
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5.Slice the model, transfer it to your 3D printer, and start printing.
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¶ Tips and Notes
¶ Scanning Special Surfaces
Highly reflective, dark, or transparent objects may produce inaccurate scan data because of reflection, light absorption, or refraction.
You can apply scanning spray to the surface and adjust the scanner exposure appropriately to improve scan quality.
¶ Scanning Small Objects
The minimum recommended object size varies by scanner series:
- Ferret Series: Objects smaller than 150 × 150 × 150 mm are not recommended.
- Otter, Raptor, and Sermoon Series: Better suited for scanning small objects.
¶ Incomplete 3D Scans
Models with holes cannot be sliced or printed correctly.
If the scan contains large missing areas, the Watertight or Fill Holes function may not accurately reconstruct the original geometry, resulting in noticeable differences from the real object.
If high dimensional accuracy or faithful reproduction is required, scanning and printing such objects is generally not recommended.
¶ Excessive Mesh Density Causes Slicer Slowdowns
Very dense meshes (with a large number of triangles) may cause the slicer to become unresponsive.
To improve performance, reduce the triangles during Meshing, or use the Simplify tool before exporting.
¶ Precautions for printing models
Objects with thin walls or delicate features are more likely to break upon impact.
To improve print strength:
- Orient the model so that thin features are aligned with the print layers whenever possible.
- Increase the infill density.
- Add a Brim or Raft in the slicer to improve bed adhesion and reduce warping.
- Use tougher materials such as PETG, ABS, or reinforced PLA instead of standard PLA.
¶ Uneven Bottom Surface
If the scanned model has an uneven bottom, use the Cut tool in your slicing software to flatten the base before printing.
¶ Further Learning
If you're interested in more advanced post-processing techniques and creative workflows, you can explore our advanced project tutorial:
Secondary Creation: Pineapple Lamp