Surgical filter (手術用フィルター / 외과 용 필터) in 3M Mask 6200 / 7502 (Large Diameter Cartridge)

thingiverse

This design is outdated, so I recommend checking out this link to download the latest version:\r\n\r\nhttps://www.thingiverse.com/thing:4255708\r\n\r\nMy goal was to create a cartridge that would extend the lifespan of surgical mask filters. The typical diameter for these filters is about 70mm.\r\n\r\nBy increasing the surface area of the surgical filter to match its 70mm diameter, this cartridge enhances electrostatic filtering efficiency. With more surface area available, air flows slower through the filter and captures viruses more effectively using static electricity.\r\n\r\nBased on Lucifer's design for a 3M gas mask replacement filter, I built upon his idea by incorporating lucifer01's Feb 6, 2020 concept to develop this cartridge. Huge thanks to lucifer01 for sharing his work:\r\nhttps://www.thingiverse.com/thing:4147665\r\n\r\nTo take it a step further, we based our design on Lucifer's approach to minimize filter exposure to droplets and dust, but with a larger diameter for added effectiveness.