About this 3D model

Uppdate 29.11.15 Added 9X4.5 blade sett, (Prop4) i hadent done this for a while so i hope i got it right. I finally got the equation curves in inventor all set, if somone wants a spesific airfoil profile let me know. This has less tip turbulence and makes a lot less noice I use it as a silent replacement for 5-7" props for my quad. 3 mm axel print as solid. I print it on hight resolution and treat it with acetone vapour I have upploaded an inventor file with a naca profile equation curve, feel free to make any wing profile by simply tweeking the numbers.