Convert CATPART to STL

How to convert or export CATIA CATPART files to STL format for 3D printing. Available catpart to stl converters.

How to convert catpart to stl file

March 27, 2025
3D modeling
Rating: 3.0/5

CATIA is certainly the best software for catpart conversions or exports of any kind, but CATIA's format are well-supported in 3rd party 3D modeling software or even some dedicated converters. This type of catpart to stl conversion is typically done for the purposes of 3D printing.

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Understanding CATPART and STL file formats

CATPART is a file format used by CATIA, a multi-platform software suite for computer-aided design (CAD), manufacturing, and engineering. It is primarily used for 3D modeling and contains detailed information about the parts and components of a design.

STL (Stereolithography) is a widely used file format for 3D printing and computer-aided design. It represents the surface geometry of a 3D object without any color, texture, or other attributes. STL files are essential for 3D printing as they provide the necessary data to create physical models.

How to convert CATPART to STL

Converting a CATPART file to an STL file is a common requirement for those looking to 3D print designs created in CATIA. The conversion process involves exporting the 3D model from CATIA into the STL format, which can then be used by 3D printers.

Best software for CATPART to STL conversion

The most reliable software for converting CATPART to STL is CATIA itself. Here’s how you can perform the conversion:

Open your CATPART file in CATIA.
Go to the File menu and select Save As.
Choose STL as the file type from the dropdown menu.
Click Save to export your file as an STL.

Another option is to use Autodesk Fusion 360, which supports a wide range of file formats and can import CATPART files for conversion:

Import the CATPART file into Autodesk Fusion 360.
Navigate to File → Export → STL.
Follow the prompts to complete the export process.

Conclusion

Converting CATPART files to STL is essential for 3D printing and can be efficiently done using CATIA or Autodesk Fusion 360. These tools ensure that the conversion process is smooth and that the resulting STL file is ready for 3D printing.

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CATPART vs STL: format comparison

How the CATPART and STL formats compare on the properties that matter most for this conversion.

Comparison of the CATPART and STL file formats
Property	.CATPART CATIA V5 Part File	.STL Stereolithography
Geometry	Both	Polygon mesh
Materials	Yes	No
Textures	—	Not supported
Animation	No	No
Scene hierarchy	Yes	No
Plain-text readable	No	Yes
Typical file size	Large	Small
Open standard	No	Partly open
Introduced	—	1987
Developer	Dassault Systèmes	3D Systems
MIME type	—	model/stl

Open CATPART file Open STL file

Suggested software and links: catpart to stl converters

3ds Max

A professional 3D modeling, rendering, and animation software that enables you to create expansive worlds and premium designs.

Alibre Design Professional

A set of 3D modeling tools

Autodesk Inventor

Autodesk Inventor is a modeling software used to create 3D digital prototypes

CATIA

A PLM/CAD/CAM/CAE software suite

CrossManager

A CAD converter with a vast format support

EnSuite

A CAD visualizaton, analyzation and translating system

Online CAD converter

A commercial online CAD converter

PolyTrans|CAD+DCC

A 3D and CAD file formats conversion software

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Reverse conversion

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