Dear Mr Lasso,
Thank you very much for the illustration. Adding the second level and selecting the intersection operation worked very well. ( see figure)
My problem is to make several openings. As soon as I make a new plane Cut, the previous opening is closed/deleted again. I have already tried to add the plane Cuts to a folder, but then the program crashes. Another question is, is it possible to fix placed plane markups so that they can’t move accidentally? Even if I have hidden this has happened to me many times and measurements have then not been correct.
