CAD tip # 11311:

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Importing STL files directly into AutoCAD - STLin.

You can use the freeware LISP utility STLin for direct import of stereolithography (.STL) files with 3D mesh models into AutoCAD DWG drawings.

You can download STLin from Download, load it with APPLOAD and run by typing the STLIN command. Select your STL file and the application will read it as a mesh of 3DFACE entities. NOTE: only the text-based (ASCII, not binary) STL files are supported.

Optionally, you can convert the imported model to a solid (solidify) - may be slow on larger models.

You can also use the STL2DWG online service from the Converters section here on CADforum, or the application Autodesk ReMake/ReCap Pro (open a STL and export it as a FBX for AutoCAD).

ACADReMake

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13.2.2017 31541×

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applies to: AutoCAD · ReMake ·

See also:
Tip 14075:	Overview of CAD formats supported in Inventor 2025 (import/export/AnyCAD).
Tip 14072:	How to import an STL, OBJ or 3DS file to an AutoCAD 3D model?
Tip 13559:	How to find the number of faces of a 3D mesh object in Fusion 360?
Tip 13557:	How to create an image with transparent background in Fusion 360?
Tip 13541:	Using Twinmotion from Revit to visualize other types of 3D scenes.

Selected tip: How to import a PDF file into AutoCAD?

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