Missing parts in STEP import in Rhino 8 - UR12e Robot Model

Rhino
1

Hello all,

I have made this post a while back then. Missing parts in STEP import in Rhino 8 - UR10e Robot Model - #3 by yck011522 and I thought I must be tripping again. But this time I made sure I have an updated Rhino version.

Version 8 SR25
(8.25.25328.11001, 2025-11-24)

I have this STEP file import problem but with the ‘newer’ UR robot model UR12e from here:

One of the surface is not trimmed properly.

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I tried it on Rhino 7, and the error seems to be similar. I don’t know if this is Rhino or the source file, but I do not have any other CAD software to give it a try.

2

Unfortunately that link requires an account to download the file, and the create account is not working at the moment.

3

_StepUnitsAndTolerance reports

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which is typical for millimeter STEP files generated by SolidWorks. (The STEP file header states ‘SolidWorks 2023’.)

To import this file to a model containing only blocks containing error-free, closed polysurfaces, set
testSTEPImportToleranceOverride Type=Override Tolerance=0.001
before opening or importing the STEP file.
(It does not import as well with 0.01 or 0.0001.)

The testSTEPImportToleranceOverride setting will remain in effect during the current instance of Rhino until it is set to another tolerance or to the default mode by
testSTEPImportToleranceOverride Type=FromStepFile

4

Thanks @spb . 0.001 works perfectly.

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