I saw a pretty good comparison video the other day of different DIY options: https://youtu.be/KobogQMf_Xc https://youtu.be/KobogQMf_Xc "What is the best DIY Ai

I saw a pretty good comparison video the other day of different DIY options: https://youtu.be/KobogQMf_Xc https://youtu.be/KobogQMf_Xc "What is the best DIY Air Filter?" EDIT: I built one for my workshop but in my house with all the windows/doors closed it seems that I can get by with a much smaller filter, there's not that much smoke/particles that keep getting in IMO.