Corsi–Rosenthal Box : wikipedia

[+] [email protected] 25 points 2 months ago

[deleted]

[-] [email protected] 13 points 2 months ago

I first saw one in my grandpa's shed 30 years ago. I've had my own sitting in my parents garage, held together by duct tape, since highschool.

It's crazy to me that someone slapped their name on it and parades it as original thought.

[-] [email protected] 6 points 2 months ago

He perfected and popularized it. Given the altruistic bent of the project, I'd bet he's the kinda guy who wouldn't dare call it his original idea.

[-] [email protected] 4 points 2 months ago

I previously tried to find a Wikipedia-accepted source of these early uses but can't find one (apparently also were common decades ago in the basement punk music scene). If you know of an early reference of the box design, definitely add it to the article!

[-] [email protected] 2 points 2 months ago

Nothing is ever new. These folks just did the work to find out the best, cheapest, and most effective way to build them. Then spread the word.

[-] [email protected] 8 points 2 months ago

I just Bungie cord one filter to the back of a fan to filter the air in my parrot room. I change the filter every two months and it works well enough to keep the dander from building up.

[-] [email protected] 9 points 2 months ago

Yup, and adding the cardboard shroud helps keep it from stucking unfiltered air into the flow.

I think the main reason for the 4 filters is to reduce load on the fan and increase filter life. But many forced air heating systems get by with one or two filters stacked on the inlet.

[-] [email protected] 7 points 2 months ago

Fan blows up or down?

[-] [email protected] 19 points 2 months ago* (last edited 2 months ago)

Up

…draw air through the filters…

[-] [email protected] 3 points 2 months ago

Smart, that way dust wont stick to the back of the fan.

[-] [email protected] 2 points 2 months ago

Yeah, better to run filtered air through that fan.