Today I constructed the carboard filter box I mentioned earlier. I dug out a 140mm 12V fan and a 9V AC adapter. I decided I wanted a way to disconnect the AC adapter from the fan/filter box. I don’t have any barrel jacks so I looked around to find some way to create a wall jack I could install on the box. Since I’ve done so much Ethernet work over the years, I have quite a stock of RJ45 connectors & wall jacks, plus the tools to work them. I decided I would replace the default connector on the fan’s wires with an RJ45 jack, and mount that on the box. I would also replace the barrel connector on the AC adapter’s wire with an RJ45 plug.
I would attach the fan and RJ45 wall jack to 1 side of the box, and the furnace filter to the opposite side. All of the edges and corners would be sealed with packing tape.
Here’s a photo of the side of the box with the fan and RJ45 wall jack:
Here’s a closeup of the fan and wall jack. I plan to design & 3D print a grill to cover the fan:
Here’s an overview of the filter side:
And finally, here’s a closeup shot of the edge of the filter, in case anyone wants to buy the same kind.
All in all, this filter box cost me only the price of the furnace filter. This is, after all, simply a proof of concept. Can an activated carbon furnace filter be used to remove filament fumes from the air? If it works, how well? I guess the next few days to weeks will provide an answer; at least I hope it will.