Cheap air filter box

[dos (Daryl)]

8" duct fans for under US$100 work great. Made a big difference in my setup compared to my previous fan in a window setup. Plus I can now control the exhaust fan with FluidNC.

Bote Electric Appliance (Vevor, etc.) EC Inline Duct Fan PWM Control with FluidNC

So I finally got around to building an exhaust system for my laser cutter that’s better than a pedestal fan in front of a window with a cardboard box on the back attached to some flex duct lying on the end of the laser cutter table; sometimes assisted with a central vac hose. One of the things I didn’t like about this setup (aside from it only really working for small area jobs where the duct inlet was nearby enough) was the noise. Somewhere here I think I read that someone, perhaps @bitingmid…