RC Plane Wing/Airfoil study

UPDATE: 18 April 2017:
I should add in a caveat: This design is eventually to be used on a 1.8m wingspan aircraft.

The v21 idea won't work. A single line thickness for internal spars is way too flimsy. Next design to come shortly.
_____________________________________________________________________

I wanted to test modeling up some RC plane wings in a similar fashion that 3DLabPrint designs theirs, only better. I wanted to design them in such a way that it didn't require expensive slic