MattโDecember 30, 2025
Pretty small units but they work well. Batteries often last a couple days. I turn them off at night when the printing is done but they otherwise run the whole day. They do help keep the smell down so id say itโs a good value. Read more
ZakโSeptember 20, 2025
When I print ABS, (my printer doesnt have an internal filter system) the entire room is filled with a Nauseating smell even with the windows open. These help... a lot. They last quite some time as well so you can leave them running in your printer overnight. I think I had them running for 8 hours or so, so they last a fairly long time. One does just well enough to reduce the smell, but using 2 works even better. they both fit inside my Flashforge Adventurer 5M with and enclosure, just make sure theyre against the wall and the air intake is facing the print bed. Also theyre super quiet, like I have to hold it up to my ear to hear the air blowing into my ear to even tell its on. So theres 0 chance youll hear them over your printer unless youre a bat and your printer is off. For $30 (i bought them on sale for 18) its well worth it to not inhale toxic abs fumes. Read more
Lost in the DesertโMarch 11, 2024
I exclusively use water washable resin. While it has low oder, it still has a strong smell when printing. These things work wonders in taking care of that smell. I only have to use one, but assume if you use standard resin you'll want to use both. The filter is easy to replace, and replacements are reasonably priced. They have a pretty decent life span. 10kg+ worth of prints and they are still working. The only complaint I have, and why it is a 4 star is because of the battery life. They last about 6 to 7 hours, while a decent amount of time. But if you're running 36 hour printing marathons, i.e. 40k large scale warmachines, large busts, or multiple plates of anything, these can go out many times on you. While I can rotate them out, standard resin users will be faced with having to charge them. And there is no warning they have gone out other then the resin smell. A little trick I learned, they will run while plugged in. Running the cable out of the printer will cause oder to leak, so I've gone to using cellphone backup batteries. The one I have was given to me, but it adds another 7 hours or so to the time, and can charge inbetween charging the units. Just get a really short and stubby USB cable, you don't want it falling into the vat, like me. Read more

BenโOctober 17, 2025
I bought these air purifiers to cut down on the VOCs and the general aroma of ASA and ABS printing. I don't have a resin printer but these work perfectly in the enclosure of my ex plus two printer from qidi. I duct tape them to the inside of the door and they fit perfectly. The smell is almost completely gone except if you're within about 1 ft of the printer. This is completely acceptable for a filter this small. Plus it's a two pack for 20 bucks so who could possibly say no to that? They are 18x18 by approximately 45 mm rectangular prisms. Read more
BigAlโDecember 26, 2025
Prior to using these my entire apartment would reek from the resin. I was hoping that these filters would cut the smell down and make it bearable. However, they actually completely eliminate the smell to my delight. Read more
Captain SeamusโFebruary 17, 2025
Printing ASA in an enclosure and didn't notice the fumes at first. When I did, I got this filter set up as a "get by" measure - but they work so well that I am digging them. They do work when plugged in (USB-C) so I can just leave it running in my enclosure 24/7. The charcoal filter does need to be occasionally changed out - mines been running close to a month now and I am noticing it starting to drop off - I did vacuum it once already, but to get the VOC control, vacuum doesn't do that. Read more
nunya beeseโNovember 26, 2025
Do what they're supposed to do, charge fairly quickly, last a pretty good amount of time like about 8 hours maybe longer. Since you get two, best to just charge one while the others running. My only complaint, my households only complaint, is when they're charging the emit a very high frequency whine that sounds a little bit like tinnitus. After I've charged them a couple times it seems like it's lessening in intensity but just something to be aware of. Read more
D HโJanuary 8, 2024
These are a weird purchase for me, I bought them out of curiosity, to see if they would make my resin printer more tolerable with fumes. When I bought my printer, my intent was always to put in a exhaust fan with magnetic quick disconnects. But I didn't have the exhaust fan and plumbing when I first got the printer. I bought the filters to see if I could print at the volume I print on filament printers. The answer is, sadly, no. I print everything in my office/hobby room. The resin is pretty gross, odor wise... Even using Low Odor resin. I've used both filters and found them to help a little, but the real answer here is negative pressure exhaust. There's definitely a use for these, and they did improve things a bit, but if you don't want headaches in a hobby room, get inline exhaust. For a little over twice the cost of these mini charcoal filters you can get a 4" inline fan and some vent pipe and extract the fumes properly. 6" fans pull twice as much air, that's what I have. I wouldn't NOT recommend these filters, but there is a much better tool for this job and is called proper exhaust for just a little more money and effort. Read more