Just a little active cabon filter for an enclosed 3d printer, that i made to absorb the fumes while printing ABS. it uses a 40 mm fan (i just used an old one from a dead 3d printer) and these standard active carbon pads that you can buy to absorb solder fumes. You can just use the purifier case to pres into the carbon pad and cut it out afterwards. You should get 9 small filter pads out of a 120 mm Active carbon filter pad. The part that goes on the bottom needs to be printed with pretty dialed in supportsettings.
Cable of the fan comes out the bottom portion of the air purifier.
The author hasn't provided the model origin yet.