I found the model in following link. I adjusted its thickness to make it printable.http://grabcad.com/library/10x4-dot-7-propellerTest Video : http://instagram.com/p/wB0QuVKPLHI tested it with my quadcopter. But I do not advise using it. I do not accept any liability for any harm that may happen to you or your properties using this model. I printed it using my delta 3d printer from GearBest. If you also want to get a delta 3d printer, you can use special coupon code GBTE to get %12 discount on GearBest : http://www.gearbest.com/3d-printers-3d-printer-kits/pp_368052.html?lkid=11035160