I'm a chemist and I have a master in chemical engineering with emphasis in materials science. And I've read the SDS of Elegoo resins which are public on their website. And what I can say to you is that under GHS global standards there is a risk of exposure by inhalation to a substance that's volatile and carcinogenic... it's a risk it's not guaranteed... and it's something that may happen after being exposed several times (maybe years) but sometimes depending on the substance, even really small quantities (ppm level) could be already very toxic... every substance will have a different threshold limit for exposure... for some it would need higher quantities to show a risk of toxicity, for other a small quantity is already a risk... meaning that the total VOC doesn't tell the whole story... even if their purifier doesn't remove all the VOCs but completely removes the one that shows a clear carcinogen risk, that would be enough in my humble opinion. However, due to this lack of transparency, the only way I would feel completely safe is by having an exhaust fan system to capture everything and throw it outside of my house and use the proper PPEs (the right mask). But maybe I'm becoming unnecessarily cautious about this... ignorance is a bliss sometimes 😅

That last bit of "putting it back in the box again" was pure gold...

Thank you for another great review! I am glad we got to see this in action. I think with the two carbon filters and keeping the lid close, maybe safer than buying this product. However, that's more of my opinion based on my environment and location that might differ from others. Also, I always get a kick where you reverse the unboxing video as if you are subtly saying, "Na, back you go for a refund!" 😂

great video, it is something I started to take more seriously recently as I have been printing a lot more and I am in a somewhat enclosed room. I am in the process of installing an extraction fan that will lead outside.

Could you make the following test? - Put the air quality meter in a big plastic bag or container that would also fit the Elegoo Mars Mate and seal it. - Let the air quality meter run for 30 minutes. - Write down the air quality of the inside of the bag. That is the base level for the next reading. - Now put the Elegoo Mars Mate with the air quality meter inside the bag or container and reseal it. - Let the Elegoo Mars Mate and the air quality meter run for 30 minutes. - Subtract the base level reading from the new reading. Now you see how much VOC the Elegoo Mars Mate spits out on his own. The higher reading in the exhaust of the Elegoo Mars Mate could mean that it sucks everything in from around it, is absolutely useless with just it's carbon filter, filters nothing, and blows out a concentrated, toxic, stream. Or it means that the Elegoo Mars Mate itself is made from the cheapest plastic, doesn't circulate any air inside the room because of the weak fan, and blows out very toxic air on it's own.

I'm just going to set up a grow tent and vent the air outside, wearing PPR when I am opening the printers and working with resin.

Activated carbon filters are good for filtering certain VOCs but not all airborne contaminants. Some of those airborne contaminants are going to just go through the filter unaffected. What you got off of the burnt toast was particulate matter, not VOC's. The detector also may have been picking up dust particles from the carbon filter. Also, that detector is suspicious, because formaldehyde (or formalin) is notoriously difficult to detect and most detectors have very short lifespans so I don't see how that is useful or how they expect it to work. Anyway, the compounds coming off of the resin vat are generally pretty benign under the conditions most hobbyists use them. Worry more about getting it on your skin.

It kind of makes sense that with a pump you would get more VOCs. With a lid with a good seal, almost nothing should be getting out until you remove the lid. With a filter pumping the air out, even if it removes 95% of the VOCs, that's still 5% that gets into the air and that wouldn't get into the air with a sealed lid. The only thing I would test is the level of VOCs when you remove the lid after using the filter and when you remove the lid without using a filter. That *might* be different, but if it isn't, the filter is doing more harm than good.

Finally, a review of this gizmo. I've been eying it, but a proper HEPA filtered air purifier runs about the same price so I've been trying to figure out which I should go with.

From the aquatics side, carbon is not all the same. Some carbons are really good at absorbing specific sized particles. As your meter suggests, 2.5 and 10 microns are substantially different. It is hard to see how a singular carbon block is capable of absorbing all of these. It would be good to test a regular certified HEPA filter to see if they absorb more of the compounds we are concerned about. As far as health concerns, the answer lies in the middle of all the hype pieces. Singular (acute) exposure to VOC's are not going to cause anyone real problems. Prolonged (chronic) exposure is what the main concern is with VOC's. Similar to that of smoking, VOC's are inhaled and create problems in lung tissue. They cause inflammation, so people with pre-existing conditions are at an enhanced risk, as well as the increased risk of cancers. Will there be people who both smoke and print with no ill-effects? Of course. Statistically, you are better off venting your printer than leaving it in a confined room. If you use a printer more, you are at more of a risk, but that risk will never be 0% or 100%. Statistics are frustrating that way.

With little or no reliable info on the vocs that come out of resin printing I just run a standing fan, a celling fan, as well as a small air purifier located behind the printers. I currently have 3 printers. I honestly feel that this helps a great deal with keeping the air well circulated within the room. I wish I had a dedicated location for just my printers but they reside within my man cave. I would love to put them in my garage but here in AZ the temps get so hot I would not want to run them during the summer months where the garage gets upwards to 100 degrees. Personally I think my current setup is fine. I should be more concerned about the resin that I touch with my bare hands at times.

I feel like I gotta put in my 2 cents here. I've been resin printing since the original Mars days. The smell with the cover on while printing was not that bad and was contained to just the room in the basement it was in. However, we recently upgraded the HVAC system in the house, and now the smell was making it upstairs, very faintly, and only after a 10+ hour print. So I picked up the Mars Mate for my Saturn 4 Ultra. And bingo, no more smell, not even standing right next to it while printing. I'm not saying its filtering everything out that is bad, but the smell is completely gone. And I garuntee that like most people, I'm exposed to far nastier stuff everyday then my couple times a month printing with resin. VOC mask and gloves all they way when I'm working directly with it, but the Mars Mate is doing the job I bought it for while printing as far as I'm concerned. If you don't like the the hazards of working with volitile chemicals and can't vent outside, then just don't do it

Amazing reboxing mate. Very efficient.....

I kicked around the idea of a grow tent or cabinet with a fan venting to the outside. But adding some of those gloves to the side that you can reach through to interact with objects inside. It's obviously overkill, but you can work with the Resin and IPA without having to wear PPE or open the enclosure. For me in a little basement office that the kids are often in, it might be a way to work without having to kick everyone out and put on PPE.

From the studies i have read, the voc content from the printing process is within tolorable values, however it is the chemical cocktail that has the unknown side effects. Also studies show that the highest concentration happens during washing and curing in part due to the agitation of the IPA. The mars mate is flawed from the start since its only atempting to tackle what is essentially the safest part of printing (printer with sealed hood on. It does nothing when you take off the hood to add resin, remove prints or wash and cure. The best option is to have a well ventilated area you can leave while printing and drying and second best to get a powerfull air purifyer with HEPA filter and actived carbon filter. I still see a lot of people concluding carbon doesnt work but for smell but its inconclusive at worst and works perfectly fine acording to most studies. If carbon doesnt work then we are all screwed. The 3m multi gas filters we are all wearing are carbon (including the ones hammer is using in this video) so we are all going to be part of a lawsuite against 3m otherwise.

I use a grow tent with a pretty powerful exhaust fan. It exhaust into a carbon canister. Looks like a muffler. Because I run 2 resin printers. It is extremely effective at removing resin odors. The manufacturer claims it removes 90% of contaminants. But I don’t know about VOC’s. The bad part is, The tent isn’t tall enough to use my lids.

I also returned mine. It's slow/super slow settings are annoying as is the missing option to hook up multiple printers with these low speed settings. I also wouldn't say its small, compared with other available room air purifiers it's on the bigger side. Even more so if you take into account that the Mate will ever only work in a single printer setup. Good thing you had the hose laying on the desk, as the pressure fit of the hose is just as weak as it's fan. If it hangs loose in the air or connects the Mate to a printer on another shelf level, the hose slides out in a matter of hours.

Haven't finished the video, but could you try testing the air filter with the usb-stick elegoo air purifiers? I'm also curious what it might look like if we have an air purifier running in a small room that's connected to the 3d printer?

I work in a foundry, there is nothing my FDM or resin printers can produce that's worse than that. And for non-foundry employees, sitting in front of a bonfire a few hours is again going to expose you to far more airborne pollutants than your printers release, unless maybe you're printing 24/7 and have your printer(s) in your bedroom. That being said, I don't think there's any good option for an in-home purifier/recirculator - it's like the vent hoods for kitchens, the ones that only filter air and blow it back into the room don't work for anything while the ones configured to blow air outside work great. Recirculating purifiers make it smell nicer, but that's it - the best option is to exhaust fumes to the outdoors rather than let them linger inside.

I think what makes it so misleading is that it's a dry block of charcoal/carbon. The smell can get trapped in it, but most of the vocs in the air won't attach to it. That's done way more reliably with a wet/submerged carbon setup, like in aquarium filters. I'm wonder as well, if the extra vocs coming out of the mate are dry carbon dust particles blowing off the block. Carbon blocks require rinsing in water to remove excess dust particles, because there's a LOT of dust that comes off. *edited for spelling

My Creality Halot Mage 8k comes with a built in carbon filter and hose that i just run to a window fan on exhaust . No issues

can you review the USB air filter that comes with the elegoo printers? or just find a better option that you'd recommend to us

I bought one of these, and before I did, I had some of the same concerns that most share. It's just a large charcoal filter, so is it really going to do anything? Will it only get rid of just the smell (which is at least something I guess)? I'm glad you did this review, because I now know I should've gone with my initial gut and not ordered it. I have my printers set up in a converted bathroom that still has a very powerful ceiling vent that sucks up steam, and air particles. it doesn't clean the air, just takes what's in there, and blows it out a vent. I don't know if that helps much either, but I don't seem to have that smell nearly as strong when I have that fan running, and it seems to at least be moving the air out of the house, so perhaps that was all I needed all along.

A well fitted printer lid will keep VOCs and particulate matter in the air surrounding the printer to a minimum. Though at the end of the print the contained VOCs and particulates will be release into the air and that is when having an effective means of venting these is key. I chose to build a fume hood measuring 44" wide x 20" deep x 44" that is vented to the outside, in the garage. Both the resin printer and the wash & cure station, resins and other chemical substances live in the hood. When printing, with the lid securely closed, I set the fan speed to the lowest value that is still effective at ensuring frequent air changes. At the end of the print, I set the fan speed to full before removing the printer's lid and cannot detect any odors, unless I shove my head into the hood. Even then there a a barely perceptible chemical odor. The hood encloses a volume of ~22.5 cubic feet and the vent fan is rate at 200 cubic feet per minute (CFM). Though I doubt that it moves more that 100 CFM. Even at the lower CFM, the air within the hood is exchanged at least 4 time per minute. Air changes per minute is more important than filtering capacity since the types of filters like the Elegoo and similar types of filter are not effective at moving air since they operated within a larger enclosed volume. Namely the room where it's located. Chemistry labs contain banks of fume hoods and not table top air cleaners. From The National Institute for Occupational Safety and Health (NIOSH): "Make sure that the space where you will be using the printer is well ventilated with lots of fresh, uncontaminated air to dilute and remove particles and gases. For example, the space has vented exhaust located near the 3D printer or windows and doors that can be opened to let fresh air into the room." And: "Isolate the 3D printer from persons in the room. For example, consider placing it in a working fume hood in a workplace setting or in a well-ventilated garage in a home setting." NIOSH recommends the above for FDM printers but it also applies to resin printers as well. I would not put much stock into the detector you used to measure formaldehyde concentration, since as other have indicated such low-cost devices are grossly inaccurate. To get accurate results requires capturing periodic air samples while the printer is operating and having the samples analyzed using gas chromatography coupled to a mass spectrometer. A study conducted by NIOSH, Evaluation of 3-D Printer Emissions and Personal Exposures at a Manufacturing Workplace, conclude, w.r.t. PPE that (emphasis added): "Personal protective equipment is the effective means for controlling hazardous exposures." and "Personal protective equipment be the sole method for controlling hazardous exposures. Rather, personal protective equipment should be used until effective engineering and administrative controls are in place."

Tbh i got th same exact same result, and it led me to the same conclusion. Leave a sealed lid on and mask up when removing it. I returned the filter as it did seem pointless, considering the biggest danger was removing the lid, and the filter has no way of helping with that

Sounds great, I am excited if you can compare different filter in the market to see which one is best, for instance Elegoo filter vs AlveoPro😅

i read that you need a purifier with activated carbon but also PCO. something about UV light ... only found a couple that seem to have both

Great vid. doesn't need stock gesture footage.

Where can we buy the correct attachment to run an exhaust from the Saturn 3!?

Should have been named the Elegoo Moon. Would have fit better in their naming scheme. Not having the required filters in stock is an issue, although it not working is the bigger issue.

anyway you could test the air quality with an actual HEPA or other highly rated air filters really interested to see how those do with resin fumes etc

Probably do just as good taking some large diameter PVC pipe and hose and fittings , drilling holes in the tube . Inside just add 2 or three MK06 MK01 HEPA Replacement Filters and calling it a day . Be about as good as that Elegoo worked . Just need a motor that's strong enough to draw the air through and housing made tight enough to contain the air movement .. Make about anything you want , you just need to replacement filters you can get easily

May I ask a stupid question? Did you remove the plastic cover around the filter?

Well, if we can take any conclusion from the toast test, it is that you should have a 'wife' standing close to the 3D printer at all times to detect nasty smells. Something my wife is quite good at (it would appear) judging by the amount of times she informs me of it! 😆🤣 In a bit more seriousness, I run a Saturn 8k and with the lid on, it seems to be perfectly non-smelly running elegoo standard 8k resin. As soon as the lid is off, you notice a marked difference. So, I'm going to run it always with the lid on. (As I was anyway) Thanks for the review and for taking the bullet with the detector costs for the test! 👍

Would you recommend having a system to suck the air out using the rear lid hole and exhausting out of a dryer vent or window like in your window? Would that disperse the VOCs faster?

forget this thing ... A question about your wargamer resin. do you know what temperature it is rated for would it cope with 120c ? (after being printed)

GREAT VIDEO !! The last thing I need is more useless junk on my workbench! 👍

Maybe try the Levoit Core 300S (which costs about the same and has far more features than this from Elegoo) with a 3-Stage Toxin Absorber Filter (green), I've always wondered if this would be a far more better general approach to work with resin 3d printers in an average room.

Wouldn't it be better to use the small one inside during operation. And run the air mate for a few minutes before removing the lid? For dissapation of the bulk of them that happened that during curing process. And there's a formula for how much volume of air has to moved for resin printing. Worked in the dental field and the room with the printers had to have the air completely replaced around every 15 minutes. So the low speed of the fan for the tiny volume of the printer enclosure makes sense.

My entirely unscientific gut feeling is that the higher reading over the mars mate vs next to the vent hole could be because of the higher airflow over the mate. I still have doubts that this thing will work but that could explain your funny numbers.

The way you tested it went from active to passive. For instance active was you blowing the vape directly on the sensor, sticking it in the burnt toast smoke, & setting it on top of the purifiers exhaust. Passive is setting the sensor next to the machine & toaster. The sensor is meant to detect ppm in the surrounding air. With active testing the concentration/ppm the sensor is detecting is vastly higher than with passive. A better way to test would be to put the sensor in a small room or closet with the printer. Collect samples without the purifier then with the purifier and compare the results.

So I guess you should just wear a good mask. Any suggestions on a good low budget extraction fan/setup for fumes?

What struck me when I started using my new Saturn 3 is that when the unit is running, the onboard carbon filter would run and I would not smell anything. But when the printer stopped, the filter stopped and the smell quickly enveloped the area. This Mars Mate works when the printer stops, but replace the filter every two months? And just how good is it? The carbon blocks are like $90 each? I wonder if that's necessary? Most quality air purifiers only require the carbon filter to be replaced every two years? Those hand held air quality testers are pretty worthless. I watched a video from an industry expert holding two of the same devices next to each other and they had drastically different readings. More professional devices are required for accurate readings. I'm thinking about just getting a quality AirPura air cleaner designed for VOC's for the area I'm printing in (basement). I think I trust that more than an Elegoo product. Still trying to decide.

Yeah, carbon filters trap smells but the volatiles just tend to blow through. Way better to use that hose with an extractor fan and push the air out the window. That's what I do and it seems to work well. It's cheaper too. 😊

There are two schools of thought when it comes to dealing with 3D Resin printers and the smell. One pump as mush air as you can OUT of the room. This works well but as I have noticed you end up making more smell the more air you pump out of the printer. so low air speed is the key. Two trapping the air inside the device. This is most likely best as you are not creating a bunch of gas by blowing on it and pumping it just just outside of where you are working. How ever that is until you take the lid off device. Once you take the lid off then you have to deal with the smell which is normal not a lot. So there you have it in a nut shell as they say. Do with it what you will.

so i dont really care about the air quality, but does it reduce the smell enough to make it worth to buy? 🤔

i know your love heated 3dprinters wudent it be a easy thing to confurt a heater to blow warm air tru that removebel vent hole ?

At least you're honest

In looking into air quality / VOC / sensors, it's my understanding that any consumer level hand held do-dad is worthless. You need something industrial level, I saw $1,500 investment mentioned. It just seems like no one, anywhere, knows how dangerous / undangerous it is to 3D print.

Have you gotten a chance to test out uniformation gk2 12k lcd upgrade

But if you take the mars mate out of the window or on the balcony

Do you think the Mars Mate combined with 2 usb filters would make a difference?

I have no opinion on whether you should stop vaping or not, but I would suggest changing the filters in your mask

Did you try a test outside of the printer case with and without an internal carbon filter running? I'd love to know if they're actually doing anything.

3 Stage filter probably better by a lot, I have a Honeywell one with a massive carbon pad on it, the activated carbon blocks I swear have far less surface area.

Thank you so much for this review. I messaged you over a month ago about this machine to see if it was worth it. You replied right away to say you were in the process of reviewing. Thank you for taking the time to try this out. Sad to learn it’s worthless, but glad I learned before buying. The fact they still don’t have replacement filters available, is just icing on the garbage cake.

Just make something to put the printer into, make a filter yourself with loose active carbon and leave it inside. Done, a self heating box and filter. In winter it only needs initial heating and will maintain 25-30°C if properly isolated, the UV lights are awesome heaters. No fire risk having heaters permanently on. Tip: don't use Ikea stuff, get dense wood.

Interesting. Thanks. Seems like it does not work the way it is promoted. Seems like you still need enclosure and put printer with mate inside. Then it would do something useful. Instead of spreading less odor but not odor-less inside your room. But for that purpose, duct fan with 4" carbon filter exists. And, ha-ha, you can buy it. Can't understand why nobody offers some solution with vented/recirculated/heated enclosure. Feel lack of completed solution on the market. I understand that this video is not about enclosures, but this product tries to solve odor problem while it not clear whether it actually solves it. If you want to buy it - you want to recirculate inside your room. Also, that means that option with exhaust out of your house is not your choice. If you want to recirculate - keep it in small, enclosed area. People often go with grow tents, but they're huge. Smallest that you can get for decent price is 100x60x60 but often they're 120 or 140 tall. For 1-2 printers they're just too big. Would love to see something more suitable for resin printers rather than plants.

Oof, that's bad to see. First it's marketed incorrectly (carbon doesn't really do much for VOC's), and secondly there's no replacement filters available. Ouch. But for me, the worst part of it all is that by the sound of things it takes care of some of the smell, but at that cost I might as well just do the grow tent plus massive carbon filter method, as such will more or less keep the fumes in on area, and I can then vent it outside as well if need be (the semi-cautious person in my is tempted to do... both, if I can figure out a way to route hoses in a non-obstructive way)

I run mine in the garage and will have both doors open and it gets a nice breeze through and blows the smell out.

Just on the vape comment: vapes aren't 'safe', they're just less unsafe than cigarettes. People seem to confuse the later with the former.

So i dont need this one?

I do really wish we could get a professional study on how the VOCs from resin actually affect us and what quantities are bad.

I would think it would need hepa purification as well as carbon. One should capture the small micron particles and the other the smells.

I might be wrong but from what elegoo sent you it seems they tested it in an enclosed chamber for six hours which would mean that it is constantly recycling the air in that chamber over and over again which is obviously not what it’s doing when it’s sucking the fumes out of the machine and spitting them out into your room as the air now can’t get back into the machine. Plus the uncurled resin in the machine will constantly be producing the VOC vapours where as they seem to have started with a fixed amount of pollutant. The way they have tested it would be more applicable to the internal USB filters working solely within the case but technically you would have to cover the resin without removing the lid when you were finished printing and then wait six hours before you opened the case. This is my understanding of what’s been sent over.

I swear I wanna start building hoods or enclosures for Printers.

I returned mine it doesnt work I use now some inline fan some adapters that are in printables and all goes outside

How is Uniformation reading?

Ok, I'm no rocket scientist, but as someone pointed out, I thin the test is skewed. You compare the reading from the meter on running filter and next to a hole. The difference here is that the air from the hole flows naturally, so it's hard to say what is the rate of the airflow - but most probably very, very low. Which doesn't mean that the pollution is not produced; it's just trapped under the lid until you open it. When the filter is running, it's obviously sucking the air from beneath the lid. So it's no surprise that the reading can be the same or even higher - the airflow of polluted air is bigger. However, it doesn't necessarily mean that the filter doesn't do anything - maybe the amount of overall pollution, that would be released when opening the lid, is reduced this way. Basically what I'm trying to say: - I'd put the printer, meter and filter in a sealed grow test, not connecting the hose to the lid. Put the meter somewhere in the middle of the tent (but not too close to a source of "moving air" like directly on the filter or near the printer fan) for both tests 1) run a print with no lid with filter ON, capture the reading from the meter (best to capture how it changes in time, but could be hard, so min/max should suffice) 2)run the same print with no lid and the filter OFF, see the readings and compare results. It should give you a more reliable results with more comparable conditions. Than we will know if it really does anything.

Hmmmm interesting - and there was me smoking my 3d printed resin cigars thinking they were better for me. Suggest you take the little meter and pop it in the bin. The less you know the better. What I do wonder is what sort of results you would get when you are using iso to clean the prints.

I read some stuff on the Ikea air measurement device. And one commented that it was a good design choice to only have an indication on stable/rising/lowering of VOC, since "measuring VOC in air is very difficult" Also VOC can be many things. I don't think it is possible to test this with only common knowledge and a handheld device. It would take an educated person with the right testing equipment....

Has anyone attempted to use grow tent carbon filters with 3d printers?

Can you say "Matching mount on the Mars Mate" three times fast?

You are using a PM2.5 sensor for particulates (smoke and from printers) that are more in the 0.1-0.5um range. Basically, it's the wrong sensor. If the filter doesn't do fine particulate filtration, then of course, that's not important, but you do dwell on this alot.

The little usb was a placebo for me. This pulls out. So when pulling out your pulling air in, which pulls out again. That seems dumb and gimmicky. I prefer to just leave the printer running without a filter. If I were to do anything else, it would be to vent outside, but Sunlu doesn't smell that much to me.

Glad people are taking this seriously. You have to think total 'pollution' per day from all sources. Your body can only deal with so much per day and any more than this results in ill health. Dietary pollutants are very high for most people on the western diet (and causes serious ill health - all the modern western metabolic diseases like alzheimers, diabetes, obesity, heart disease etc.) and so most people can't deal with any additional pollution - think about how smoking tips most people over the edge even quicker than a bad diet alone. Stress, atmospheric pollution, diet, smoking all add up and if it's too high - you get ill / die (30,000 people die per year in the UK from air pollution).

yes i am very upset i purchased it when i started 3d printing lo

Exhausting>>>>>>>filtration for smells and VOCs

Spoiler alert yeah it does nothing but strip smells. Note their testing methodology says to let it sit for 6 hours then test again. Well you could turn the Mate off for 6b hours and the levels would drop about the same. Its 6 HOURS!

basically then its just a gimmake, it probabley got the award for the design and nothing else, iv built a carbon filter system for my ultra 3 and iv got basically nothing at all smell wise witch is what i mainley wanted to get rido of smell, but i think the little usb filters do agood enough job really

Nice outro. 😅

Same here i use a grow tent for the small to mid size printers but fotr larger printers like the jupiter and higher these printers are not well thought out by the manufacters at all...if they actually took the time and listened to users like myself and others that have a functioning brain and took us to the manufacturer we could collaborate to create something so much better than the garbage being sold out there...its sad that these printers are just being recycled with the same parts over and over

yeah, i think it would probably be easier, and safer, to just rig a tube with a fan drawing air out a window

Please excuse my ignorance, so the new filter draws air through the top cover but the printer is still pulling air out through its own heat vent? Isn’t that a tad pointless? I appreciate you had the mini usb filters (I’ve got those) but aren’t they just to remove smells? Would we be better off placing the printer 3m from a window and placing the draw motor end outside? Wouldn’t need to replace the carbon filter, (assuming you are able to ensure the wind can’t blow the fumes back inside).

Think I'd rather just print an adapter, and buy some hose + a fan to pump it outside 😂

I pre-ordered 2 of these, 1 is still in the box. They really are useless and I am surprised they're still for sale. It's the worst 3D printing accessory I have purchased to date.

correct...adding the filter (even the one they provide) it is just moving the air and making more VOC coming out form the lid. Keeping the lid close is the best solution

vor from most or vor from plastic like buddy, thats not the same. And yes you're wrong, aint ther a fan even with the lid on you ll get air out. this devise idk is your wrong on that, I would just take the air outside no need to have it in the room.

just do what i do, plug an air extraction fan to outside, its just the best way no matter what

You should definitely stop vaping. Nearly all studies have pointed to it being every bit as bad if not worse than just smoking.

For the price you can get a pretty decent air cleaner built for workshops (like woodworking) that's going to do a lot more air circulation than this little guy. Granted, it's not feasible to put one of those in a bed room but if you're printing in a garage it would probably be fairly beneficial. I really hope more companies come out with similar solutions as the mars mate, but maybe thye could actually work haha!

I bought one. Now seems like a complete waste.

Honestly the Temtop filter is not really reliant ... even the company themself suggest to buy a more expensive one to get not random measuring values

lost me at calculation formula =p

Ew, screw the filter on the Elegoo trash, change your masks Air Filters, they're black.

"I bought this thing that measures if air is good or bad..." proceeds to take a big ol' lung full of vape, says its "Hazardous" Still vaping?

that detector sucks shjould have used a better one

doesnt do anyting like all the filters provided by elegoo...just a gimmiick

I was a mechanic for 16 years breathing in god knows what , so I dont think spending a few minutes in the same room as a printer is going to cause any life changing side effects.

Should put the meter at your car exhaust just to see how it compares :) I agree with the mechanic that printer fumes compared to being in an enclosed garage with 6 cars in the bays is negligible. I am no expert though, I am in fact an idiot.