Coffee only thing keeping Uncle alive!

📷 Koutarou Okamoto

📷 Heber Lopez

Another design is using 2 20x25x1 filters, taping them to the sides of the box fan and then to each other so they sort of make a triangle, then cutting cardboard to make a top and bottom to the triangle.

This was discovered as a more effective design during the 2020 US west coast fires.

https://tombuildsstuff.blogspot.com/2013/06/better-box-fan-air-purifier.html

Our cube has only been running for about five hours. My mouth no longer feels dry. My eyes are mostly back to normal. Sneezing has been greatly reduced. I’m still sick and that might take a while, but this is a HUGE improvement. The whole cube costs less than $100 to make and that included getting the materials delivered through Door Dash.

Richard Attenborough learned sign language specifically for this scene, Samantha Krieger (the young actress) and pretty much everyone else did not know he'd done that.