Hello, First of all The problem you have with the curved wall trim is due to a different wall piece in the same coordinate. When you delete the small wall at the bottom, the problem will disappear. The gap in the window creates an incorrect space on the curved wall for the selected window type. The gap polygon of the window type you selected in the appendix has been corrected. You can copy the / simple folder into"carlos":24qneot6" said:but when you place a window on a curvilinear wall, there is a serious gap between the window and the wall. How can we solve it.. ..if you look at the attached pictures... regards.. carlos..