Testing different furnace filters. 12:54 video:
Previously:
HVAC filter box grabber - GIF
Testing different furnace filters. 12:54 video:
Previously:
HVAC filter box grabber - GIF
New plans added on 11/20: Click here for 2,589 plans for homemade tools.
davidschutt (Feb 24, 2021), nova_robotics (Feb 22, 2021), Scotsman Hosie (Feb 24, 2021)
No real surprises, we use very coarse panel filters to stop insect wildlife followed by spun fibre 'bulk sheet' 2" thick for coarse dust, then a finer pleated filter before the final HEPA stage (6" deep), but then we are aiming for Class 10 cleanroom standard air, often we make better than Class 1, until people enter the room...
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