I am currently building a enclosure for my Lulzbot Taz 5, with the help from MrMcGuire's Taz enclosure files. I Ordered Two 120mm pc fans, and realized my temperature will drop if i have Two 120mm pc fans. So i designed 2 big fan vents. Now i can be able to close and open the vents. With some trimming with an Xacto knife, you will have a nice fan vent. I made two different styles, one that you can snap and join, and one you can join with a M4x12mm hex round head bolt.
2mm raft to prevent lifting or warping.
print separate to prevent warping.
trim ends of fan blade for easy rotating.
need to trim center of fan blade to ensure easy joining of parts.
use with m4x16mm round head hex bolts, with 1/4 plexiglass, and m4 plastic washers