License: CC BY 4.0 (Creative Commons Attribution 4.0 International) DIY air purifier V1 by @JurArtDeco | STL files available | 3D printed | Components cost less than $100

This air purifier is inspired by the Corsi-Rosenthal box, but with 120mm computer fans and uses 3D printing technology.

This is a fully working, tested version of the assembly. All parts from screws and nuts to case elements can be printed. All necessary print settings for each part can be viewed in the video below or on the JurArtDeco youtube channel. For some elements, the presence of supports is critical, it is worth paying attention to this.

Highlights: all parts and accessories of the case can be 3D printed; compatible with M3 MPR 1900 MERV 13; 120 mm computer fans are used; usb powered; the cost of all components is less than $100.

The list of components: M3 MPR 1900 MERV 13, 20"25"1" (50cm62.7cm1.9cm) (2pc ~ 32$) Arctic F12 PWM 120mm (5pc ~ 25$) 1-5 PWM Splitter (1pc ~ 2$) 12V Copper DC 5521 to 4Pin PWM PC Fan Cable (1pc ~ 2$) USB Boost Converter DC 5V to 5V 9V 12V 5.5*2.1mm (1pc ~ 2$) PETG filament (~1kg ~ 15$) What the finished case elements look like, how to connect the fans, and how to prepare everything for assembly are also in the next videos. Since the project consists of many components, I have added a videos with detailed instructions, I think it will be clearer and easier.

Review and instructions of V1: https://youtu.be/Zs-62tiZ3aA

All details in video with upgraded version of V2: https://youtu.be/2Rjd_7sv9Mk

Process of assembling the top cover + connecting the fans: https://youtu.be/sEJ1GH_casQ

Assembly of the pre-release version of the air purifier V1: https://youtu.be/PZkCodAogLw