HEPA 13 Filter (not true hepa)

thingiverse

Instead of purchasing one, create one forever... As I was cautioned, this is not safe by any standard, but ultimately, that decision rests with you. Syntaxx thanks for pointing out this observation. Post-Printing Assemble the HEPA filter frame. First, print the body and mesh twice. Then take a paper towel or two and use it as a fine synthetic garden cover, just like in the pictures shown. Next, sandwich the paper between two mesh layers and insert the entire assembly into the HEPA 13 body. Paper towels are used to fill space between synthetic linings. It should look something like this... Once completed, simply cut away everything that hangs over with scissors.