This is a design that I created using solidworks professional as a simple way to show what I can do with the software and as a fun little project. There are two halves to the duct that need to be cleaned (there is a layer that will need to be cut away) and then glued together. The file for the blade is unique and made to be able to be printed without the use of support material and also will need some cleanup. The blade and duct have been tested at 12,000 rpm's and there is a short break in period for the blades as they will initially rub the duct at high rpm's. PLEASE USE CAUTION if you build this the prop may EXPLODE! The motor I used for this was a turnigy aerodrive D3536/6 1250 kv running on a 3 cell Lipo. Here is a link to a video of it running  https://www.youtube.com/watch?v=7ScW2JMroTg