Thanks for all your advice. I did completely rework this first element. It has multiple parts now (it consists of a monolithic core part and separate objects for the banners, arcs and ceiling parts). Next I thought about doing a single object file with several groups and materials, but geometry injection seems to be an interesting solution. Thanks for this sample, lesbentley On the other hand, I'm not worried about the obj size. It's well below 500kByte, which should be no problem. I always use UVMapper to get rid of the normals and keep the file size low. My concerns were mainly the morphs in the *.cr2. Switching on/off body parts would be a good solution too and allow a single obj. I'm very interested in these SET files, maclean. The goal is easy to handle (MAT files help a lot) AND versatile elements. I think I'm going into the right direction with your help. This will be very interesting. Thanks a lot - Walter