deletion fittings in 3d

[iron72]

Good evening.
I created my solid with all his work.
Just that I made a mistake now, as you see in the jpg image I have indicated internal fittings to the two wings, but I put them wrong, so I wanted to erase these fittings and here is the crucial point... I can't erase them.
Does anyone know a method that deletes these fittings?
Thank you.

 

[lattu]

Do you have to erase everyone or just someone? Are you using the delete face command?

 

[iron72]

No, I have to delete them all.
I tried to delete faces but it only works on the fittings in the corners.

 

[iron72]

I did it, with the command erases faces.
only that I couldn't always get off the chord at first.
At least I felt I had to follow a certain sequence to erase a whole profile.
What do you think?

 

[lattu]

autocad only performs certain operations, which allow it to restore a valid geometry. Maybe it would seem possible to you, but he decides!