Lack Enclosure Built in Vent and Filter Fan

cults3d

I was designing a ventilation system and wanted something to control airflow when I didn't need it warm (PLA & PETG), along with managing fumes from ABS. I also wanted it clean, with minimal cables and obstructions. Plus, if you believe some recent articles on "nano particles" in 3D printing, this might help with that. The main goal was to have a slight negative pressure within the case, enough to pull fumes and particles through, but low enough to avoid temperature fluctuations in the enclosure. The attached files consist of the sleeve and bottom flange, the cartridge for the pads, and the top fan that mounts to the fan holder and drops into place. Print Instructions I printed mine with PLA at a .2 layer height and 20% infill. Since it doesn't have much stress, you don't need to be too meticulous. Parts List Fan: https://www.amazon.com/gp/product/B009OWVUJ0/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 Fan Speed Control: https://www.amazon.com/gp/product/B00809BQZG/ref=oh_aui_detailpage_o02_s02?ie=UTF8&psc=1 Carbon Filter Pad: https://www.amazon.com/gp/product/B074MKZNFW/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1 Generic Filter Pad: https://www.amazon.com/WEB-WVENT-Vent-Register-Filters/dp/B000BWKMI2 Molex Power Connectors: https://www.amazon.com/gp/product/B07CVZPTN4/ref=oh_aui_detailpage_o02_s02?ie=UTF8&psc=1 Install Instructions Cut a hole in the LACK table the same size as the sleeve, this piece goes in from underneath and will be flush with the top. I used hot glue on the flange and that was more than enough to secure it to the table. Make sure you place the notch in the sleeve in the direction you plan to run the wire to the leg. That notch is for the cable and plug that goes into the fan, as that plug sticks out slightly. To run the wire to the fan, you can easily drill a hole through the top of the leg, the printed corner piece, and the underside of the table as the legs are hollow. The inside of the table is paper, so easy to push through. See the attached picture of how I completed this. I did have to cut the wire to run it and added a Molex connector to it so I could also disconnect the fan later if needed. Note the notch in the top of the LACK table, this is to get the cartridge past the wire. The wire runs down the leg and there is an additional Molex connector for when I need to remove the top of the enclosure. The carbon pads are just cut to size and placed inside the cartridge. Make sure the grid is pointed up to keep them from getting into the fan blades. The fan is mounted to the top piece using the screws and wire guard that came with it. It also includes rubber bushings to help with noise, they are between the printed part and the fan on the inside. I did have to cut the screws down with a hacksaw by roughly 3/4". The circular notches in the corner of the cartridge are for clearance of the nuts on the fan mount. General notes With the fan on full, the airflow on this is low with 4 pads installed. It takes care of most of the fumes on an ABS print, without really affecting internal temperature much. The fan is super quiet (even on full) if you are concerned about that. There are higher speed versions of this fan, but I went with the quieter one. Wishing now I had gone with the higher CFM. Any questions, please feel free to ask! EDIT - 12.21.18 I added an STL for the cartridge that is 12mm thinner to work with the following fan: https://www.amazon.com/AC-Infinity-Cooling-Ventilation-Projects/dp/B009OWRMZ6/ref=sr_1_1?ie=UTF8&qid=1545249205&sr=8-1&keywords=AC+Infinity+AXIAL+1238&tag=tv-auto-20 While it is double the CFM, it cuts the amount of room for filter material by about half.