I have been using sketch up for a while now and thought I had a good grasp of things…HOWEVER, when I am trying to rough out a basic house model I am often unable to push/pull my rectangle through the walls - sometimes my geometry is right, sometimes it’s wrong. I run solid tools and everything looks good . If some one could enlighten me I would greatly appreciate it. I would like to understand why this is happenig… Happy to share my model if someone would kindly let me know how best to do this…
Post a model with problems. Usually, the hole fails if the faces of the wall are not quite parallel or the hole rectangle is not parallel to the wall or if the hole rectangle is outside the group or component the wall belongs to. You must also take care that you infer to the back face of the wall when pushing the hole.
Here I adjusted the style to show the edges colored by axis. You can see the lines are black for that window wall, so you moved something out of plane.