@intufreecad Off topic: which software do you use to add the texts and the circled numbers to your images?

The Hosting solution that has been adopted for Arch_Windows is not recognized when exporting. Windows and doors have to be selected separately.

The WPProxy is in the way. If you make it invisible snapping to the arc works fine.

To change your start up WB: https://wiki.freecad.org/Preferences_Editor#Workbenches

wmayer wrote: ↑Mon Apr 22, 2024 3:13 pm handleChangedPropertyName and handleChangedPropertyType that are overridden for all feature classes where a property type or name has changed

Are these available in the Python API? A quick search shows that in src/mod there is no *.py file that calls these methods.

That is far from trivial. Each WB now does its own thing when converting objects and properties to a newer version. Saving to a previous version would require a level of coordination that is currently missing.

chrisb wrote: ↑Sun Apr 21, 2024 9:46 pm It should work. What exactly did you do?

Must have made a mistake yesterday.

BTW: I tried to create half the model, but I could not apply a PD mirror pattern to the filleted shape. Is that a known issue perhaps?

Welcome. Please attach your FCStd file and your STL file for inspection.

Maybe like this:

Gottschi Some of the faces in your model are B-spline surfaces. There is also an issue with flipped normals. And even if adjoining faces are flat and seem to have parallel normals there are in fact small deviations. We don't know how this shape was created, but something must have gone seriously wr...