Wanhao i3 PSU air ducting

I put a larger fan on the back of my i3 and it blew a lot of air across my build platform. I was worried about it getting TOO cold on there so I made this piece that directs airflow to the rear of the unit. It utilizes the aerodynamic geometry of a Von Kármán (see the equation in the picture) curve to best redirect the airflow around the unit.

BE CAREFUL when removing the supports, this piece is very delicate!