im making a simple model of a house but when i try to cut the windows and doors one of three things happen. First is both the cutting object and main object disappear. second is it acts like it cut it but when i render/shade the model it shows that it didnt actually cut it out, so in result i still have a solid wall. Lastly (i have made several models of this house trying to get it to work) it will allow me to cut out a door, but nothing else. could someone please help? i have tried increasing the edge count but that was no help. Thanks!