The Smallest 4" Hose Filter

I recently bought a GlowForge Laser Cutter/Engraver and although I had the dryer vent going outside, there still was a lot of smoke that was created from the unit outside.

I decided to create a small low profile filter to reduce the smoke outside. This is a small box that fits around a 4" male hose adapter. If you are venting smoke, it's a great option to reduce the plume quite a bit.

You can laser cut this and assemble it easily. I used some basic charcoal filters (included a picture