Avoiding Common Pitfalls Always ensure that 3D objects are solid PartDesign Workbench will notify you of any operations that would prevent the model from staying solid. Part Workbench has a Check Geometry tool, which can check for further defects Ensure your dimensions align properly Dimensions are vital: 1 millimeter in FreeCAD is 1 millimeter in real life Control degradation of the model, during transformation w/ the slicer (FreeCAD file -> a G-Code dialect) No printer will be able to directly create a 1:1 replica of the 3D object.