140mm Fan X1/P1 ABS/ASA Stink Window Ventilator

The final (well current for the last 6 months) evolution of my ASA/ABS toxic fumes ventilation system.

My design leverages 3x 140mm consumer computer fans to exhaust air in the room and air directly from the rear vents of a X1 or P1 series machine. Lots of experimentation has led me to conclude that the small chamber size of these machines only needs a small amount of CFM and mmHg to very effectively negative pressure them and vent toxic fumes outside - any more than just enough (like the full 100+CFM and 0.5mmHg) only serves to excessively cool the chamber making warping a significant issue.

I strongly recommend you find a way of sealing the gap on the door hinge. I've used “Door Seal 3” by IBW ADDITIVE to great success: https://makerworld.com/en/models/436681-ds3-door-seal-3-for-x1-c-e-p1s-ibw-additive

I routinely run the chamber fan at 10% with the window fan around 50%. This costs about 2-3°C of a towel insulated X1C chamber.

The machine adaptor uses 8x5mm rare earth magnets to attach directly to the steel back panel. I use 1.5mm Tesa foam tape for better sealing and retaining the magnets.

I used 75mm dryer hose from Amazon to connect the vent adaptors.

My prototype window mount was printed in random scraps of PLA silk I had laying around and much to my surprise has survived TWO Australian summers with no obvious issues. I still wholeheartedly recommend printing end-use functional forms in PETG - translucent looks quite nice. ASA is the gold stanbdard but I think it's overkill for this.

The fan array has a large plenum chamber behind the fans to prevent deadzones and was designed to assemble with a strip of insect mesh sandwiched between the two halves.  The steeply canted louvres have proven highly resistant to any water ingress and winter winds. I've not noticed any blowback except on the wildly stormiest of nights with the wind from just the right direction. Everything else is fine.

I'm using Corsair 140mm fans as that is what I had in the parts box. If I was buying fans, I'd go straight to Noctua NF-A14 Industrial PPC units in the 2000rpm variety.  Speed of the fans is controlled with a nifty little board from Aliexpress that broadcasts a PWM signal so the fans regulate themselves off a simple 12v brick.

I don't expect my window profile to match yours but this should be a solid start for anyone wanting to go down this path.