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CAD tip # 11806:

Question

CAD
% platform category

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

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):

Inventor

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21.2.2018 3126×

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applies to: Inventor ·

See also:
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).
Tip 11972:	How to convert a Tinkercad 3D model to a DWG file?
Tip 11590:	How to replace a 3D mesh model with a grid structure?
Tip 11391:	Which file formats to use to bring a 3D model into Paint 3D?

Selected tip: Mass change of units in the whole Inventor assembly.

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