F350 Rear Seat Air Vent Adjustment Knob

Bought a new (to me) truck and realized the rear passenger air vents weren't adjusting as they should have. Pulled apart the console and found that the knob that holds a gear mechanism had broken. Rather than try to source a new air vent or visit a scrap yard, i pulled the knob off, took a handful of measurements, and made a more basic but equally functional replacement part.

Designed specifically for a 2018 Ford F350 but I expect this would fit in a variety of Ford trucks with a similar interior. 

Printed in PETG since I have read that PLA can melt or deform in a vehicle sitting in the sun.