Temperature controlled back plate assembly

The internal temperature of the EnXLosure was getting too hot when all doors are closed (40C+) and was causing Nextruder failures with PLA filament. The Nextruder was trying to advance PLA into the hot end, but the filament was too soft and would deform/break inside the extruder assembly. If I kept all doors open, and the temp around 30C to 35C, the failures did not occur.

I took the upper back plate acrylic STEP file and began modifying it to accept a small fan with associated temperature control unit (W1209). I used this as a guide: https://www.theneverendingprojectslist.com/3dprintingprojects/enclosureexhaustfan/ . Note that one of the controllers in the 2-pack was defective and intermittently drove the fan. I think it was a problematic relay.

This switch makes it easy to cycle power to to the controller: https://a.co/d/0Kw42pr

Everything is fairly straight forward assembly using M3 and M4 screws.

I printed all parts in PETG. The temp control case was printed orange with added text parts via PrusaSlicer (modifier.)