Problem with tolerances..?

Now and then, I have problems with plane normals for surface-related tasks, such as shell elements, surface loads, surface temperature loads, etc. I usually work around the issue by rebuilding the geometry or by using a construct-deconstruct-construct approach, for example, when dealing with the local system in shell elements.

Does anyone else experience similar problems? Is there another solution?

yes.

Depending on the geometry, I also get the same issue sometimes.
There is an ongoing research about tolerance as FEM-Design required a pretty tight value while Rhino/Grasshopper is more “relaxed”.

We do have an open case on GitHub and we hope to fix it at some point.

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