I am not a FreeCad user, but in every other 3D package I have used the answer to this question is one of the following: self-intersecting profiles, non-closed profiles, or too great an angle on the loft path (which would create an invalid solid). Check for these issues and I'll try to open this file in AutoCAD later this evening.
this post was submitted on 10 Aug 2024
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FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.
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Thanks, I verified the sketches twice, there's no open wire. Fun fact, if I delete all the other objects, Freecad can happily make the loft...
Ok... That is an interesting fact... If you move them away from the other objects can you loft it and then move it back?