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CAD tip CAD tip # 11806:

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Q - question

Higher precision for facetted round surfaces in STL export from Inventor.

A - answer In the stereolithografy file (.STL) generated from Inventor, the radial (round) surfaces and details are represented too roughly, facetted. How to increase their smoothness, precision - e.g. for 3D print?

In the main dialog of the command "Save copy as" click the Options button and in the options dialog choose the resolution "High" or "Custom" and decrease the "Deviation" parameters.

Surfaces will be then converted to STL format in higher precision. But the file size will be larger.

A sample - comparing STL output of a single (larger-sized, about 50cm, 16in) IPT part with the precision settings (from the left) "High", "Low" and "Brep" (in the 3D print application Autodesk Print Studio):

100% *  CAD 
21.2.2018    14371×  
Prices - CAD eShop:
applies to: Inventor ·

See also:
Tip 14075:Overview of CAD formats supported in Inventor 2025 (import/export/AnyCAD).
Tip 13824:How to export OBJ including materials, textures from Inventor?
Tip 12884:How to insert your 3D model into a PowerPoint presentation?
Tip 12297:Which CAD formats are supported in the Autodesk Manufacturing Data Exchange Utility?
Tip 12184:Overview of CAD formats supported in Inventor 2020 (import/export/AnyCAD).

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