20$ Tornado(vortex) Generator

*** Background History First ***
About a month ago.. I was about :the half of my peanut butter toast when my wife mentioned me that my older son has selected his subject for his third grade presentation... Tornado! Seriously! That's great... That kind of subject spark my interest...

So I went here to find something kick-ass to spice up his presentation, I've found a pretty cool tornado vase... So i start printing it... I was looking at my print starting up, finishing my toast (lol)... And my brain was already at the next step... This looks great... But.... It's so... Passive...

So i went back, and i remembered playing with bottle and tornado coupler when a was a youngster... Great found that one and start the print on another printer... Ok now the bad news... I didn't drink soft drink so 2L bottle didn't exist at home... Humm ok, that's right... You could be surprised what I'm ready to do in the name of science ;)

I went back to ask my wife to buy some 2l bottle fill wi