Hi Leatherguy! Thank you for your answer!!! Its very helpful and will do it the way you explained! This is my first projekt for Poser in this size and some Problems have to be resolved but a wonderful way to learn from. First i have only 25 days ( 3D Exploration limit ) and maybe you have some advice. If i import the cob objekts into 3Dex all pieces of a wallsection are grouped and the later objekt for Poser import is one piece. What can i do to have sections as individuel group or part to make it transparent later....or is this not important? Do you had a look at my site ? the L- of the levels have a sidelenghts of about 19 to 20 meters, is this not to big for a one-Level-piece? Greetings, Webbird