Corsi boxes

Cheap easy to build air cleaners

In this extremely simple, Twitter-aggregating post, I will give a little bit of the histor and cheer on the many CR box makers. I will give a number of examples of their work, allude to the difficulties of producing CR boxes internationally, and remark on mutualism. Since I assume most of you know how to make Corsi boxes, I’ll confine directions to an Appendix.