About this 3D model

I designed this air scrubber to use a minimum of special parts. Build it today, no magnets, brass inserts, or high performance fans required! Read here about why you should have an air scrubber: https://github.com/nevermore3d/Nevermore_Micro#about-the-nevermore-micro Why pick this model: Massive filter volume, 2-3x more than the competition If you have a PC case fan and access to Home Depot you can build this model today Large filters and novel airflow path reduce static pressure and enable the use of PC case fans 124x60mm footprint fits inside a Bambu, Prusa, or Voron enclosure Prints on a single build plate Doesn't require heat set inserts or exotic hardware Fusion360 CAD files are available, remixes welcomed Supported HEPA filters: Preferred: 86880/MC-V194H vacuum filter Use "filter_caddy_110x74x21.stl” Preferred due to high surface area and integrated gasket https://www.amazon.com/gp/product/B07RM31JCH/ Backup: 8040 vacuum filters Use "filter_caddy_82x41x14.stl” https://www.amazon.com/gp/product/B0782T7L6P/ Home Depot alternative: Any furnace filter, cut to size and mounted in a printed frame Use “furnace_filter.stl” with "filter_caddy_110x74x21.stl” Upgrade to a vacuum filter later Supported fans: Preferred: 3x 40x28mm axial server fans Use “axial_fan_caddy_40x28.stl” Preferred due to high static pressure and reliable quality These are available cheap on the used market from decommissioned servers Search on Amazon for “4028 fan” and find a 10 pack with reviews complaining that they're dusty and have the wrong labels https://www.amazon.com/s?k=4028+fan 40x20mm fans will fit but I’m less confident about quality Backup: 2x 5015 blower fans Use “blower_caddy_52x15.stl” and “blower_duct_52x15.stl” https://www.amazon.com/GDSTIME-Brushless-Bearing-Cooling-Extruder/dp/B0B1V6JTB8 Alternatives that you might already have in a drawer somewhere 1x 120mm or 92mm PC fan Use “axial_fan_caddy_120x25.stl” or “axial_fan_caddy_92x25.stl” Upgrade to a server fan later Activated carbon (optional): https://github.com/nevermore3d/Nevermore_Micro#nevermore-3d-printer-carbon Print settings: This is a big model, one wall and 5% cubic infill will print faster Filament: I prototyped in PLA, you may want to use PETG or ABS if printing high temperature materials Wiring: Drill a hole in the wall or floor of the enclosure Install wires todo: add instructions for normal people Airflow measurements todo: measure volumetric flow and compare fan and filter configurations Change log 2023-08-21 Initial release 2023-08-22 Added clearance for wiring to the 5015 blower parts 2023-08-24 Added an all-in-one .3mf file Added CAD files 2023-08-25 Added guidance on filament selection How to contribute: Post your make, it keeps me motivated to improve the model when I see people using it! I'm especially curious to see how this fits in a Prusa or Qidi enclosure Post your feedback, idea or remix in the comments! Post a wiring tutorial! Credits: The Nevermore folks for the original recirculating air filter for Voron @thrutheframe for creating the BentoBox for Bambu printers