CAD tip # 5800:

Question CAD
% platform category

Model import error: Coincident face_face_ints with different body vertices

After a SAT or STEP import (ACISIN, STEPIN) of a 3D model, AutoCAD displays the message:

Failed to calculate silhouettes of a face.
Modeling Operation Error:
Coincident face_face_ints with different body vertices.

This is one of the error messages of the ACIS/Shapemanager modeller. There are probably overlapping faces, small (very thin) wedges or gaps in the imported 3D model. Try to locate the complaining body and fix it in the source application (e.g. Inventor).

You can also use the AMSTITCH function in Mechanical Desktop:

Explode the part to an AutoCAD 3D solid
Start AMSTITCH and select the solid
In the Surface Stitching dialog, under Stitch Type, select Custom Stitching
In the Operation area, select Heal gaps

ACADMDTACADM

* CAD

16.10.2007 16382×

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applies to: AutoCAD · MDT · AutoCAD Mechanical ·

See also:
Tip 13965:	Total length of sweeps in Inventor - wires, pipes, trusses, tubes, hoses (iLogic)
Tip 13211:	Automatic numbering/renaming of multi-volume bodies in a part.
Tip 13197:	How to transfer a model or sketch parameter to iProperties?
Tip 13040:	iLogic - display information about complexity of an Inventor part.
Tip 12532:	Error when inserting standard part - Modeling: Failed to insert a part into assembly!

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