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FreeCAD is an open-source parametric 3D modeler for designing parts.
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About FreeCAD
FreeCAD is an open-source parametric 3D modeler for designing parts.
Check model dimensions and export a compatible printable mesh for slicing.
Getting started with FreeCAD
- Open the design and select the intended solid in the model tree.
- Use File, Export to save a mesh, or use the Mesh Workbench to create a mesh from the solid before export.
- Review mesh deviation or tessellation: smaller deviation can better preserve curved surfaces but makes the file larger.
- Open the exported file in your slicer and confirm dimensions and geometry before printing.
What to consider
A CAD solid and an STL mesh are different representations. Keep the editable FreeCAD file, and check mesh quality and units in the slicer.
Official documentation
FreeCAD guides
Explore existing GoodPrints3D articles, then check the official documentation for current release details.
Is FreeCAD Still a Good Solution for 3D Printing in 2026?
Read the guideWhat Features Does FreeCAD Have for 3D Printing Users?
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