6 blade 40cm fan_ one piece blade

Hi,
I was asked about blades with one piece.
This blade model is 177mm hight so you´ll have total diameter 40cm fan with centerpiece.
-Blade is solid piece with leg.
-Spinner has center pole and 1.2mm skin.
If you scale its wise to do scaling to all three parts.

http://youtu.be/VmRh6whBj-c

Now I have a some higher printer so this is getting exiting - I think I can reach between 60 and 70 cm fan with one print...