In our latest tutorial, we showed how to use boolean operations when having to cut holes into curved surfaces. Back there, it was a simple, rectangular window - and also small enough not to cause problems with its parallel sides in a cylindrical wall.
In this tutorial, we shall demonstrate, how to add larger windows that "respect" the radial nature of a cylindrical wall in SketchUp - i.e. their sides and even the top will have a certain, widening shape. To make it more interesting, we'll add three windows at a time and they are arched.