Alex Knappenberger of the “KillerSoundz” YouTube channel built an air cleaner for his woodshop. The most expensive thing in the project was the 8″ 800cfm blower.
Over the years people have asked for alternatives to an expensive pre-manufactured air cleaner, and typically I recommend something as simple as a box fan with a furnace filter and then setting it near where the work is happening.
Alex’s design is taking that idea a few steps further and making something a little more permanent and a lot more powerful! Checkout his two part series on the build.