Try using Part_Builder to 1st create a shell from the faces, and then a solid from the shell.

I have unpinned this topic.

Check the position of the WallTrace sketches.

Most:
X = 1683,08 mm
Y = -1000,48 mm
Z = 2991,92 mm

WallTrace005:
X = 10,00 m
Y = 0 mm
Z = 3000,00 mm

It seems that you are not fully aware of the position of the working plane. Or is the Z of 2991,92 mm deliberate?

From the description I conclude that the contour of the pocket sketch matches the area you want to preserve. But you should create the contour of what you want to remove. The bigger question is: why do you create a pattern (not sure if you have used a linear pattern, but I hope so) of a rectangular ...

@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.