@harry_krueger said: Hi guys, thanks for the input. While the method you described works great for a flat surface, I am not able to adapt this so it works for a curved surface too. Take a look at the attachment. Problem is the round towers. Any ideas? Harry, Its a matter of a little advanced planning and then building up the structure. See attached model. Mike Battlement.skp [image: XnmD_Battlement.jpg]