AirManagerV2 recirculating air filter for 3d printing enclosure

thingiverse

After watching the video from Zortrax about their HEPA Cover Filtering Device (see link below), I think for myself a HEPA and active carbon filter is plenty sufficient for keeping the air clean in my 3D printing enclosure. Certainly better than nothing, but I've designed it with a radial blower that recirculates the air inside the enclosure to avoid a draft. This is the second version of my design. The first used a very good ULPA U15 filter, but it was only available from one seller in eBay Germany so not very useful for everyone. Therefore, I searched for alternatives and found these much cheaper Zortrax HEPA cover filter sets. They're available everywhere, and I'm sure they're also way cheaper on AliExpress.com if you know what to search for. I had to redesign the housing completely because the new filters were too big and didn't fit into the old housing. I've tried to integrate snap-fit connections in the filter housing. They kind of work but are not the best (this is my first try at snap-joints, feel free to remix). You need to use super glue on the snap-joints if you want the filter housing cover to be firm. Bill of materials: 4x Neodym magnets N52 ø10mm x 3mm 12x 2.9mm x 9.5mm ISO 14586 screws 2x M4 x 35mm screws 2x M4 washers 2x M4 nyloc nuts 1x Titan Blower TFD-B9733M12C 1x HEPA & Carbon Filter set from Zortrax (3 sets) 1x Self-adhesive foam rubber (thickness 2mm) 1x PWM low voltage motor speed controller with switch 12V/2A 1x DC power jack socket with ø8mm thread The 4x Neodym magnets are integrated into the "blower housing magnetic cover." Just add a pause or filament change in the slicer at "layer 20" or "height 4mm." Fix the funnel with two stripes of self-adhesive foam rubber to the Titan Blower. The fan blower has plenty of suction and does not need to be on full speed. If you don't have the metal server cabinet as an enclosure, use the "blower_housing_screw_cover" to fix the AirManagerV2 to your enclosure. No supports are needed, but I used a brim on all parts to avoid any possible warping. I used Prusa PETG for all parts, but you can use PLA too. Here is a short test video of the AirManagerV2 with an incense candle: https://youtu.be/GJdmQB-2da8 Btw., if you want to build yourself an enclosure, take a look at my blog post here: http://www.schweinert.com/perfect-3D-printer-enclosure-for-prusa-i3-mk3/