Good evening everyone, I have a similar question , I draw in my bachelor thesis a house from a point cloud . Problem : Windows solution 1 : drawing polygon and from this cut out the window , this is possible ? If yes how? solution 2: drawing instead of one polygon around the window , several faces . Now I havearound the polygons unnice lines . I have chosen this path . Can I combine two polygons to one? if yes how? Full of hope and greetings Philipp Nicola