I've added a carbon filter in this version.
Prints in two pieces, the filter piece attaches to the main muffler piece using M3x20mm screws.
I have M3 inserts on the muffler.
I use Potulas air purifier filters.
Added much stronger 60x1 0x3mm magnets since this is a bit heavy.
Links below:
Here are the ones I use for the M3x20 screws:
https://amzn.to/3nl33aK
Here are the M3 inserts I use including the soldering tip:
https://amzn.to/3ANuBJ0
Here's the carbon filter that I use:
Here are the magnets that I use:
The author remixed this model.