Lack Enclosure HEPA Filter System

cults3d

This design builds upon my initial fan/filter design. After seeing the significant dust output from my printer, I decided to upgrade to a proper HEPA filter. This design is slightly over-engineered due to specific constraints I faced. I wanted to reuse the same hole and sleeve that I had already cut into my Lack enclosure from the previous design. I also wanted to use the same brand fan to take advantage of its variable speed control. Additionally, I needed a specific HEPA filter. If you have already built my previous design, you can print and adapt this one without making any modifications to your existing enclosure. The fan used in this design is louder than the one in my previous design, but I prioritized filtration over noise level. On top of the HEPA filter, which comes with a built-in carbon pad, I added two more pre-filter carbon pads for enhanced air quality. I printed this design using PETG, but there's no reason why you can't use PLA instead. The structure isn't critical, so either material will work fine. Here are the parts you'll need to purchase if you didn't build my previous design: * 120mm AC Fan - 110 CFM - https://www.amazon.com/gp/product/B009OWRMZ6/ref=ppx_yo_dt_b_asin_title_o00__o00_s00?ie=UTF8&psc=1 * OPTIONAL: Variable speed control for fan - https://www.amazon.com/gp/product/B00809BQZG/ref=ppx_yo_dt_b_asin_title_o03__o00_s02?ie=UTF8&psc=1 * Cut to fit Carbon pre-filter pad - https://www.amazon.com/gp/product/B074MKZNFW/ref=ppx_yo_dt_b_asin_title_o03__o00_s01?ie=UTF8&psc=1 * HEPA Filter (2 Pack) - https://www.amazon.com/gp/product/B074T4KJ2C/ref=ppx_yo_dt_b_asin_title_o02__o00_s01?ie=UTF8&psc=1 * Molex power connectors: https://www.amazon.com/gp/product/B07CVZPTN4/ref=oh_aui_detailpage_o02_s02?ie=UTF8&psc=1 To assemble the filter, follow these steps: Cut a hole in your Lack table to fit the sleeve, making sure it's flush with the top. Use hot glue to secure it. Run the wire from the fan through the leg of the table by drilling holes in the corner piece and the underside of the table. Attach a molex connector to the end of the wire for easy removal. Assemble the filter by gluing the bezel coupler to the inside of the bezel, then attaching the lower filter housing to the coupler. Install the fan into the upper fan housing and attach it to the lower piece using screws. Insert the alignment pegs to ensure proper alignment. Use hot glue to secure the upper and lower fan housing pieces together for a tight air seal. Insert the HEPA filter into the lower filter housing, making sure the notches align properly. Slide the fan assembly over the lower filter assembly. For the power wire, you can use a molex connector on the other side of the bezel that connects to the lead wire molex connector. This keeps everything clean and within the table. To install the carbon pre-filter, cut two pieces of the carbon filter to fit inside the sleeve. Place the first piece inside the sleeve, followed by the first pre-filter spacer. Add the second pad and top it off with the second spacer. These spacers will keep the pads flat and uniform under air pressure.