Blender loop cut e boolean doesn't work together. How to fix this ? How to create an arc on plane of loop cut? I'm trying to reconstruct a real structure, and the whole structure so far has been obtained from a simple plan through the '' loop cut '' system. Which on some occasions is bringing me several problems such as double edges or vertices (easily solved but frustrating) and in this exact case in the construction of arcs.
Question :

Is there a way in the loop cut system or in general a method to derive from the only plane I have, an arch, curved or oblique shapes? Obviously to attach them perfectly to the support surface.

Also if I try to pierce the plane through an external object and therefore a full semi-circle, the boolean modifier doesn't work or creates ghost artifacts or nothing. (Also tried merged with the &quot;array&quot; modifier).

In any case, any other faster or safer method to build this kind of shapes even in a simultaneous way is accepted.


I hope you have the answer to my mistakes.

Another thing sometimes after having knocked down some walls and rejoined the vertices to recompose some facades using the &quot;F&quot; FILL key, I can't execute a new loop cut, for example in the walls above the selected arches.

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I have added some screenshots. In the last two I show you how I had to solve. By deleting the wall, I manually inserted an external arch to the structure and joined later.
The only problem is that then I have to rebuild the wall, vertex by vertex, because otherwise, graphic artifacts would be created.

So the questions always remain the same,
that is, if you know other methods to build in series using certain measures between the created objects. and why the boolean modifier doesn't work like in this example. (it doesn't work even using an external object, the subtraction is seen in Edit Mode but not in Object and not in Render.)


[Solution?]
I solved it like this in the end, but it is very laborious. (fig.7)
While if I had managed to pierce a plane already dissected by loop cut, it would have been better, and less tiring, but the boolean modifier didn't work.
Not sure that responds to your question for some other reason.

But to keep things simple, you can make a hole in the wall, and place the windows in it as a separated object (you can join them later if needed):