How to Convert 3D Models into STL Files in CATIA
Introduction
CATIA is a powerful CAD software capable of handling complex designs. Converting your models into STL files for 3D printing involves several steps. This guide will walk you through the process.
Phase 1: Saving a Model Design in STL File
- Open Source File:
- From the File menu, select Open and open the source file.
- If the source design is saved as an assembly, it will open as a CATIA product model.
- Save the Product File:
- Save the product file as a CATIA product model.
- Create Individual Part Files:
- From the File menu, select New > Part and give it the name of one of the components.
- In the product window, select the component and copy it (use the Edit menu or right-click pop-up menu).
- In the part window, paste the component.
- Repeat these steps until you have copied all components and pasted them as individual part files.
- Create Combined Model:
- From the File menu, select New > Part, and give it a suitable name for the combined model.
- Copy each of the individual components (parts) from the working files and paste them into the new (combined) model file.
Phase 2: Re-aligning Parts (if necessary)
- Align Components:
- Occasionally, components may not align correctly in the combined part. Use the constraints feature from the Insert menu to align them properly.
- Review Settings for Accuracy:
- From the Tools menu, select Options.
- In the Options dialog box, select the Performance tab.
- Under the General category on the left, select Display.
- Pay attention to the 3D Accuracy setting:
- Lower settings result in finer details and larger STL files.
- Higher Curves’ Accuracy Ratio results in smoother surfaces, especially for complex geometries.
Phase 3: Saving the Part as an STL File
- Select STL Command:
- Choose the STL command from the appropriate menu.
- Set Maximum Segmentation:
- Set the maximum segmentation to 0.015mm.
3. Export the Model:
- Select the model and confirm by selecting Yes.
- From the File menu, select Save As.
- In the Save As dialog box, select STL from the Save as type pull-down list.
- Enter the file name and click Save.
Additional Information
- CATIA Import and Export Capabilities:
- CATIA can import almost any design file format that includes solid data (e.g., IGES, Parasolid, STEP).
- It is capable of creating STL files from parts (CATIA parts files), but not from assemblies (CATIA product files) or geometrical representations (CAR files). Source files, including those saved in a neutral format (STEP or IGES), must be saved as parts.
- To create an STL file from it, convert it to a multi-bodied part.
- Tips for Successful STL Conversion:
- Ensure all components are properly aligned and checked for accuracy before saving.
- Use appropriate settings to balance between model detail and file size.
By following these steps, you can successfully convert your 3D models into STL files using CATIA, ready for 3D printing.