MegaBee V2 Coanda Duct Rev2 (Fits MegaBee HD)

UPDATE: I got tired of keeping the TPU straight, so I went to polycarbonate and made some adjustments for Rev 2. For anyone wondering where I'm getting these design principles, I stole them from a couple of white papers (see PDF files).

1) Shrank the gap down to .01 * the prop diameter
2) refined the inlet duct radius to .13 * prop diameter
3) brought the flow separator ring out from the wall to .5mm from .3mm and added exiting radius below. You may now wish to print this with supports
4)