2035 4 Blade Propellers For 11xx motor

It is 1st version of my propellers fo Aurora 90 or similar FPV racer. Suitable for 11xx brushless motor.
Printed with ABS. Some mechanical finishing required after printing.
I also recomend chemical finishing with acetone to make propellers more strong.
May be printed without support or with light support.

I've made some flight tests and found that pull power is not so good as with stock propellers.
I think it is bacause of incorrect profile of blades and incorrect angle of attack. I pl