Hi Michael,

Decent hunches on the analytic planes and coplanar surfaces, but the same error is thrown for both these new versions.

Poking around it almost sounds like there's a kind of BRep called a "sheet metal body" and the vendor is particular about "Your STEP/STP file should contain a single, solid sheet metal body. Files with multiple bodies stitched together or assemblies will not upload successfully."

I tried a zero-thickness surface, but that doesn't work either. I guess a sheet metal body must have thickness since one of the links below says "Parts designed with a thickness greater than 0.500″ may not upload successfully."

Is there such a thing as a "sheet metal body" in the STEP standard, or are they talking loosely about sheet metal bodies that have attached parametric bend data in a CAD system's internal representation, but become standard-issue solids when exported? I'm surprised by the prohibition on solid bodies being stitched together since I didn't think that was a thing in the first place.

https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-F26CB5C7-A011-4C13-A2E9-F58790B8FC1D
https://sendcutsend.com/guidelines/3d-files/
https://sendcutsend.com/blog/how-to-export-a-step-file-from-solidworks/

- Peer