I tried uploading a .obj but in fact it was too small (4x2x1mm) and it was not hollow. I am looking for somebody who can do this alterings to it to print it in strong & flexible plastic. Animated demonstration of the logo included in .zip file, logo available in .ai. If needed i can upload other formats. Logosize should be 14x7x7 cm, including the adjustments in depth seen in video animation. Feel free to ask. I can't offer much, maybe a little price.