Hi, Please find attached a feature definition that you can use for exporting blades into the geomturbo file format. Note that this export will be included in one of the next CAESES releases (menu > feature definitions > tools). If you need it right now: Just put the definition into the feature user directory (e.g. C:\Users\name\AppData\Roaming\friendship\features) to directly access it through the menu in CAESES. Cheers Joerg PS: Check also this related post for importing geomturbo files, as well as our company blog post about this topic. GeomTurboExport.fdf