No nonsense activated carbon filter

thingiverse

Edit: although after trying this design I did notice an improvement, it's still not as good as I hoped it would be. I decided to take this design as a starting point for a different design that I thought of for my FDM printer's enclosure but never worked on. I feel like it would be perfect for this use. I'm gonna leave this design up in case anyone is interested in making it. I think I probably underestimated how much VOCs a resin printer as large as the m3 max will release. This might or might not still be useful for smaller sized resin printers. New version can be found here https://www.thingiverse.com/thing:5791883 A simple, not overengineered activated carbon air filter to get rid of smells and VOCs from the printing process. I've been recently getting into resin printing as well, and I quickly learned just how smelly that stuff can be. My first print stank up the whole place. I decided I needed an air filter, but I couldn't find a design I liked. Using the nevermore in a resin printer's enclosure felt a bit overkill, so I decided to make my own. It's obviously designed very heavily based on the elegoo and anycubic air filters, except it's made to take inexpensive loose activated carbon granules instead of those BS proprietary cartridges that cost 5$ each, and also none of that battery nonsense. This filter is mainly meant to be used in resin printers. It fits just fine in the back of my anycubic m3 max, check if it'll fit in yours vefore printing. It can obviously be also used as a filter for an FDM printer enclosure, but it might be a bit undersized for that. you're probably better off looking into something like a nevermore for that application. Assembly is very straightforward. The filter is meant to fit an axial fan in the bottom, set to blow air into the filter. Put the fan in, screw it in place with four M3 screws (tap them straight into the plastic. I considered using heat set inserts but I felt like they would be unnecessary and difficult to get into position for this project). Then fill the main chamber above the fan with activated carbon granules, pop the lid on and power it up. That's about it. Fan choice considerations You're gonna wanna use a fan with enough static pressure to blow air through all the carbon above it. I designed the filter to use a 4020 axial fan. I used a 24v 4020 sunon fan, and with the chamber completely filled with carbon I can still feel airflow coming out of the top. If you want to use a 4010 fan, that will also fit but you might have to fill up the reservoir with less carbon to get the airflow to pass through the filter.