8/14/2026 at 4:03:02 AM
by walterbell
8/21/2026 at 4:36:00 AM
I built something similar to the boxfan and 4 air filters when I'm doing woodworking, especially sanding. They work pretty well for that if you are on a budget.by spl757
8/20/2026 at 6:18:02 AM
A YouTuber, Joel Creates, recently developed a filter that can be assembled from furnace filters, 3D printed parts, O-rings and PC fans: https://youtu.be/GpA7-EJpKWUFiles can be purchased by backing the Kickstarter but they won't be sent until November: https://www.kickstarter.com/projects/joelcreates/oddcube-air...
I think this could be substantially cheaper than a build based on a PC case.
by Youden
8/19/2026 at 11:32:37 PM
> The total cost of these filter boxes are somewhere around the $300-$350 CAD rangeAbout the same as a Coway
by xnx
8/19/2026 at 11:39:46 PM
But furnace filters are a lot cheapee than most replacement air purifier filters, and that's before you buy your furnace filters at Costco or surplus.by terribleperson
8/20/2026 at 8:03:00 AM
But repairable, cheaper to operate (power and consumables), and quieter for the CADR than Coway.by Nukit
8/20/2026 at 7:58:32 AM
If you want to DIY these there's a FOSS (GPLv3) parametric builder web app that will output files for 3D printing, lasercutting, or handcut foamcore and calculate the performance of different configurations for you:https://www.filterboxbuilder.com
There's no real performance difference between DIY and metal PC fan filter boxes, just durability.
by Nukit
8/20/2026 at 4:42:55 PM
This would be a neat thing for case makers like coolermaster or corsair to do a one-off of while the self build market is slumped.by ChiperSoft