What on Earth is "The Ventilator" you ask?

Well, pull up a seat.

Whilst searching for a solution to having an enclosure over my Ender 3 V2, I wanted to reconcile the issue of the enclosure being heated whilst the main board and power supply defiitely not needing to be heated. I also wanted a neat way to scrub and ventilate the fumes from filaments such as ASA, ABS, and so on. And so, the Ventilator Modular Duct System was born.

The VMDS is designed to be tailored to your specific use-case, with multiple segmented pieces of varying lengths, that can be configured into a cooling, scrubbing and venting solution that works for you. Its low profile nature of only 20mm makes it perfect for fitting into tight spaces and making use of the available space.

Main components include:

-Blank ducts; for moving your ducted air (3 lengths)
-Filter ducts; for drawing in enclosure fumes and scrubbing it through filter media (3 sizes)
-Boxes & Grills; for your filter media and mounting your scrubber fans (2 sizes)
-Vents; for going over 92x14mm fans commonly used as upgrades for printer mainboards/PSUs, and for pulling air from the enclosure (single and double port)
-Right angles; for arranging your ducting as needed (horizontal and vertical bends)
-Miscellaneous; end cap, spacer and baffle (3 types)

All parts are assembled with standard M3 cap screws and nuts, and each segment has tabs with M3 hex nut cutouts so as to speed up adjustments. M3x40 for duct-duct connections, and shorter or longer depending on the way your 80/92mm fans are mounted.

The VMDS isn't just for 3D printers. It can be used for literally anything you need to duct, as long as your material can handle the temperature/weight (consider bracing/supports for long unsupported lengths). Whilst the VMDS isn't technically waterproof, with a well tuned printer, printing the spacer part in TPU and placing it between lengths of ducting might even make it able to transfer liquids!

An example ducting arrangement is shown in the photos using two fan inlets (designed to go over the fans on your printer's mainboard and PSU), passing through to a 40mm x2 filter box (fill the filter boxes with activated charcoal pellets, mount some 4010 or 4020 fans on top of the box, to extract fumes from the enclosure and into the duct), then running through the right angle and up to the fan outlet, which would be mounted on the wall of the enclosure (to vent to atmosphere outside the enclosure). You could continue this ducting outside the enclosure, and run it to a window. Tie this all together with your favourite microcontroller reading the enclosure temperature off a probe, such as a DS18B20, and a relay for your fans, and you have a neat and effective temperature-controlled enclosure for your prints.

3D printing settings:
-Recommended PETG minimum when used in a 3D printer enclosure, otherwise for venting cooler gases PLA may be suitable

-Print orientation is generally best in the orientation you find them in (standing on the end), with exceptions being the right angles
-0% infill & walls 999 renders a print time of approximately 52 mins per 10mm at 50mm/s with layer height 0.28mm
-Support on

Additional pieces will be added to this collection over time, further diversifying the capabilites of the VMDS.