problem with wall scan

[Danig]

hello to everyone, I'm finishing a redesign and I have a problem with grooves in a curved wall.
This curved wall has continuous facades, and when I go to create the groove but it creates it all over the wall by jumping the windows.

The problem is, I don't need the groove between the windows, I just need it from the last window. how do I avoid this (or erase the "pezzettini" that form between the continuous facades)?

I could solve by establishing the starting point and end of the extrusion, but I don't think there is.. Selecting horizontal takes all the wall excluding the openings. .

Thank you.

 

[lance]

I don't know if it can be a solution, but you could try to split the wall with the split command and apply the groove only in the section you need.

 

[Danig]

Yes, I thought about it, but the project is a little "particular" and divide the wall brings me some trouble. .
Anyway I solved, with alternative methods but I solved.