yeah, that's clearly a bug. Unfortunately, SurfaceToBSplineSurface doesn't exist in the current FreeCAD source code :LSoltmann wrote: ↑Mon May 17, 2021 1:05 pmCode: Select all
GeomConvert::SurfaceToBSplineSurface() - Infinite surface
Code: Select all
grep -r SurfaceToBSplineSurface .
https://dev.opencascade.org/doc/occt-7. ... nvert.html
Unfortunately also, the maintainer of the TechDraw workbench (wandererfan) is no longer around. What would be good is to try to narrow down the problem to a minimum. Ideally, even without using Assembly4 and only using pure links