I am a beginner with FreeCAD and want to model a fuel tank.
My version is 0.18
the inner part of the tank is no problem, just an extrusion of a b-spline.
With the side walls I am stuggeling.
the schape should be like this:
this was modeled by a sweep of these two sketches:
The problem is that it doesn´t create a real solid:
Is it possible to use two parallel splines to prevent overlapping or is there a complete other way to get such a shape?
I tried also with revolve and common of different solid shapes.
Thanks for your help.