Recirculating air filtration system V3.0

This is the third version of the filtration system.

Main changes:

• stronger blower fan (45.0CFM, 55.0mm2HO)

• larger filter volume

• filament and print time saver

• lighter

• easier installation

Assembly instruction：

• Preparation

1. One 12032 blower (feature: 45.0CFM, 55.0mm2HO)

2. Any filter material you prefer (I am using 75mm x 75mm x 15mm H13 HEPA filter and active carbon bags, HEPA is suggested to be higher or equal to H12 to ensure the effectiveness of filtration)

3. Prepare 11 Brass threaded inserts (size: 3*4*5)

4. Print the models one each (you might need two "Acrylic damage-free fixing board")

• Assembly

1. Glue "Filter blocker" and "Air-in buffer section"

2. Glue "Air-in buffer section" and "Air-out buffer section"

3. Glue "Air-out buffer section" and "Air-out fan duct" - Filter set

4. (Recommanded) You might wanna use epoxy resin to enhance the glued parts - the black lines you see in between glued parts in the photo uploaded

5. Install 3 Brass threaded inserts on to the "Air-in blower buffer section"

6. Install your 12032 blower on to  "Air-in blower buffer section" - Blower set

7. Install 4 Brass threaded inserts on to each “Acrylic damage-free fixing board” 

8. Fill the "Filter container" with whatever filter you like (I applied 15mm thick H13 HEPA and 30mm thick active carbon bag) and inset it into the "Air-out buffer section"

9. Install the Blower set onto the printer with the help of one  “Acrylic damage-free fixing board” 

10. Install the Filter set onto the printer with the help of one “Acrylic damage-free fixing board” (two “Acrylic damage-free fixing board”  should be used up by the moment)

Congrates! Assembly completed, start to enjoy the fresh air by turning on the blower!