DIY filter to contain your nefarious gases. Great for resin printing!

Thread the parts onto M3 or 4-40 threaded rod and use wing nuts to secure. You can also use the Spacer as a stencil to cut a hole in a bin to make a makeshift fume hood!

Two Filter Frame Halves are needed to hold one piece of filter foam. Any foam about 5mm (1/4") that you can cut to a 120mm square will work. Here's one that might work: https://amzn.to/3bD1fQA

My configuration is:

1. Grill
2. 120mm fan, blowing away from grill
3. Spacer
4. 2x Filter Frame Half holding foam
5. Charc-Holder
6. 2x Filter Frame Half holding foam
7. Spacer
8. 120mm fan, blowing out
9. Hose Adapter

After assembling, fill the Charc-Holder with activated carbon pellets or granules, such as https://amzn.to/3dMRXEp

Then, use M2.5 screws to affix the Charcoal Lid to the Charc-Holder.

No parts need support material.

You can build your own configuration! Replace the Hose Adapter with another Grill if desired. Line up multiple Charc-Holders for more filtering fun.