Many years ago, I duct taped an air filter to a box fan and hung it from the ceiling above my workshop area in the garage. It’s cheap, but it was so effective that I ended up having another one that I move around the shop when I’m doing a particularly dusty task. (Note that it is a bit of a fire hazard to purposely draw some dust right into your fan motor so use at your own risk. The filter doesn’t catch it all.)
That has worked great for years but it’s a pain when I change the filter because it’s hard to get the old tape off and then the new tape doesn’t want to stick to the dusty fan. After thinking about ways that I could model and 3D print some kind of clip, I realized that others had surely solved the problem before. Sure enough, I found a great model online that included the ability to easily resize the clip to fit my specific fan and filter. After a little trial and error, I got it sized just right and the clips are awesome! This is so much better than the old tape approach. I did have one of the clips break when my mobile version of this fell over so I might reprint these to be a bit thicker.
