Simon,
I appreciate all that and given that the wall detail is of the sort found before and after the 2nd world war it is simple and almost as fast as a simple push pull single leaf door or window opening, but given the more normal modern day wall detail it appears to be very difficult. If you commit to making your leaves solid and then your plug solid and then negating one form the other SU., simply shouts at you with a message box stating only two entities cane be negated from and as you know the modern wall is at least three leaves many of us like to use 4; then old fashioned drawing/copying/transferring a rectangle on to subsequent faces becomes not only difficult but far from spot on in accuracy. What I want to know from you or another of Sketchup’s highly experienced SketchUp users is a quick, easy and accurate method of cutting many doors and windows of many differing sizes. May be we can pre-empt the cutting of walls by inserting the door and or window object/entity ‘a per pro’ floor and ceiling joists before raising the leaves but then presumably that entity would also require a solid lining to make all other detail build around; perhaps I should experiment with that notion.
Help required please,
ChrisPSR