Alex’s shop made air cleaner
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.

Filed in: Blog • Shop accessory • Shop tricks and techniques
cool idea! kills me to see him pull his panels back thru the table saw though…. ACK!!
I was wondering who’d be the first to mention something about that LOL?!
I just about crapped my pants when I saw him do that. How that has never backfired on him I have no idea!!!
Like the idea. I’ve got a cabinet designed for my shop…don’t know when I will ever get to building it though…I scored a free used blower from a local heating/ac company. it came out of a furnace.
Thanks for sharing.
Thanks for sharing Matt. Will need to post this on my Facebook page. I have been doing a lot of work on dust collection in my shop and sharing what I have been doing with interested people. I will probably add something like this to my shop too.
Nice work, the end of the tape measure wiggles to accommodate the thickness of the end. When you switch between pushing against something or pulling it. I hope that makes sense.
FANTASTIC idea!!!! I got a couple blowers laying around from some dead bounce-houses my kids had when they were smaller. I think I’m going to try to repurpose one of those suckers.
Also, I have the same circle jig and have cut a bunch of speaker boxes over the years. You were darn close to getting your cord caught inside the cutting area in the video. Be careful brotha!
That’s an awesome idea for the used blowers! As for the router cord, I was thinking the same thing. I was just waiting for a blue spark and snipped cord to fly by LOL!