As an engineer I love how you made this a proper experiment with controlled variables. EXCELLENT VIDEO.

The level of detail you provide with your experiment is fantastic. Thank you for doing this.

Very nice! Thank you for taking the time to complete this experiment, and film it.

You need way more views on these. It’s rare to find a non biased tester these days. Can’t thank you enough for all the help you’ve given me personally.

Very nice video as usual, your tests are amazing well done with strong accuracy. Keep going the good work!

Thanks for all your work Igor. I use a PrintDry Pro. It is noisy but blows a lot of air and holds the temperature accurately. It sucks outside air, heats it, and blows it through the chamber. I have found it works great for me. I had a fan motor failure after one year but PrintDry immediately sent me a new base free of charge. Pretty awesome customer support. I took the old one apart and found the fan/motor construction to be of low quality. A very simple redesign of the fan and ducting would make this much much quieter. Keep up the great work, Igor.

Great video as always 👍 Thanks for sharing your experience with all of us 👍😀

Your videos are so good You cover all the really interesting stuff and also test it in a way that is useful. Thank you for your work :)

Thanks for this test. Finally someone who had some real numbers to compare. Excellent!

You are a gosh darn god. THANK YOU for doing all this great work for the community!

This is EXACTLY what I have been wanting to see for a long time, a comparison between these in a good way, it is clearly that even that I got the sunlu dryer extremely cheap, it still feels like a bit of a waste and explains a lot of why I have not got any good results from it Especially right now in the autumn here in Sweden, right now my humidity is around 70% in the air, inside with no windows open, that effects the filament in a pretty negative way I will wait and see what the new upcoming ones you talk about will bring and if they are better! Thanks for this video, really interesting to watch!

I appreciate your engineering approach and the data you provide. I appreciate all the work you put into your videos. Great stuff, please keep it up!

Thanks for the video! By the way, the Sovol manual says to leave the lid cracked open and I think this would improve the performance a lot as it will allow for the humidity to escape.

I love this video! The way to show the results and how the experiments were made is awesome! this types of videos are the one that need to exist on the internet, this videos help everyone to know the truth about how the products thae we want to buy works and how the companies are spending their time to create good products (or bad products) for us. Thank you very much for sharing!

Love your attention to detail, thanks for sharing your results 👍😉

Nice to see a comparison like this. Just a suggestion, as location of sponge vs heating elements can be critical, use an empty spool and put the sponge in the middle to allow for that. Also having them next to each other means the ones in the middle get more heat (from the other dryers) than the ones on the end - test one at a time or space them out more (though spacing out more you risk having diffenent background temps in the room. Cheers.

This is one epic comparison video. thank you for the time and effort.

Loved your very objective way of measuring and being able to compare the performance of the dryers. It was exactly what I was looking for, and this approach is very different from all the other reviewers of filament dryers. Kudos! Just as a suggestion, I always like the approach of being objective first, then subjective - I noticed you didn't want to give your opinion and let the data speak for itself. But I think once you've collected the data and presented it, it's also very valuable to then provide your subjective opinions - e.g. which dryer you feel is the best value for money, etc etc. When you do more of that, people will learn to appreciate your opinions as being reliable and data-driven, which is always a good thing! :-D

Nice test. Keep up the good work, your channel is awesome!!!

Outstanding video! Definitely sharing this information on my 3D printing pages. Nice work!

Thank you for your work on this video. I am now shopping for filament dryer.

That was a very good experiment, and I really liked your method. I happen to have an Eibos and I am extremely happy with its performance. And as you mentioned, there is a like to space available to dry desiccant packages.

Excellent video. Thank you for all the hard work.

Was a pleasure to watch. Thank you.

Great video! Thank you so much for doing this

Again, a great video. I'm using the Sunlu S1 with a 5015 @7V Fan Mod. Also the temp-sensor was moved to the middle.

Thank you for the video and the solid data based review!

Very thorough test, thanks for sharing!

People are reporting that the EIBOS is so aggressive that it eventually melts the filament at heater fan input at the bottom. It might do well with a deflector of some sort so that the hot air isn't blowing directly on the filament. Similar complaints with single roll EIBOS at the center of the spool.

Thank you very much for the video!! Exactly what i was looking for!! 😊

I have the eBox but rarely use it. I tend to use my original PrintDry and I have a fruit desiccator for my 3 kg reels. I think I will use your sponge part of the test to test how the other two are doing. Thanks for the inspiration!

These in depth comparisons are very valuable and useful to the community. Thanks Igor!

Excellent video, thank you for doing this work for us 🙂

This is a proper experiment, A+ sir!

Excellent experiment and results comparison!

Thanks for sharing this information. Excellent experiment!

Very informative. Thanks for making this video. I use the DHT 22 sensors for monitoring temps in or house for Home Assistant automation program.

Love this video, so clear and smart

Excellent review, thanks for the video!

You're te hero we don't deserve but we need. I wasn't aware that I need dryer for PET-G and is best to keep filament in the dryer during printing to achieve best results. Thank you mate

Fantastic work, great video!

Hello Igor, thank you for the test. Shared in one of my 3D printing groups [FR].

Thanks for doing some science to quantify filament dryer performance. Very useful!

I really wish I would have had a review like this a year ago... I would have bought the eibos instead of getting the sunlu and the esun. Amazing work as always, thank you!

Wish I had seen this 4 months ago! I didn't see any good reviews for dedicated filament dryers back then, so I bought something bigger than I really needed. The facts: I bought an Ivation food dehydrator from Home Depot, drilled holes in the side, installed Bowden tubing to act as feeders. Its big, its noisy, it heats up the room, but it can dry 4 rolls at once! 5 if you don't mind crowding. Highest temperature is 158F/70C, lowest is 96F/35C. Regulation is quite good. Timer runs up to 10 hours. The fan inside is ferocious, lots of swirling air. Does a decent job of annealing PLA objects. Two rolls printing, two waiting their turn. I live in Seattle where the humidity is constant; Lakes, rivers, Puget sound...we are surrounded by water!

Incredible work

very excellent video, thank you for setting up and experiment and showing the data

Awesome test! A lot of new filaments have launched since the making on this video, so please consider doing the test with those! I am sure companies would be glad to send them for you to test. I wold love to see the new Sunlu S2 with the 360 heater, FixDry dryers, Comgrow, etc.

Awesome stuff! this should be a recommended video for anyone interested in 3d printing

Beautiful work and research! Would have been good to show all sensors in a 'control' box to prove they are all within reasonable tolerance of each other. You deserve more subscribers! Great Channel

Very much useful Specs, Very Unique video i would say, Thanks a lot again.

Very helpfull test, as well as your other drying boxes videos. I have two of the Sunlu S1, mainly for use during 3D printing. Chose those as they do not make any noise. After watching this and your other videos I think I will add a Eibos to use that to predry filament that I am about to use. Or to dry it before I put it in a vacuum bag. Even with the Sunlu S1 I have seen better results with printing. Subscribed!

This is very helpful, thank you

Thank you this helped me choose what to buy

Great video which has decided my Drier box purchase +1 Subscription

Good overview thanks for that!

Nice one again! You should make the test again but with removed desiccants. I'd love to see how the eSun's perform. I have just grabbed an eBox Lite and it looks pretty good to me.

Great review, thanks!

I have the Eibos. It works very good. I would not suggest running it for a 24 hour print, because it can over dry PLA. For PLA just run it once at 50C for 4 hours, then just use it as a spool holder for the print within the enclosure.

Excellent video. I've been in the market for a dryer for a while, and was about to simply make my own. I am neck deep in projects, and I'd rather just buy a dryer, than divert energy away from other stuff. One thing, you forgot to include a control. You need to put a sponge on your thingy so you can measure the rate at which it dries in ambient conditions. You need this control for your drying rate. No control means you only have absolute values to work with. Final water content is an absolute value (and in this case the most important one), drying rate is a relative value, and needs to be compared to a control.

Yes another awesome video, cheers from oz

Incredible video!!

Thanks for doing this!

nice video, I have the Eibos for PETG only, I find the heat release enormous in the office, fan noise less loud than the ender 3v2. Remove the black "humidity" label on the humidity sensor of the Eibos, we will also have the temperature in the box in ° F or ° C. 👍

Great video, after over 4 months watching this video over and over I decided to buy the Eibos, without any doubt it is the best, but still, after some weeks of working with it, I discovered it has major problems that I would rather describe as design failures. The most inconvenient one is the position of the heating head and fan just underneath the rolls. I had to dry a PLA roll without the need of printing immediately, so I dryed it using the suggested temperature and times. It has dryed, but when I took it off, several coils were deformed in the bottom part, the heated PLA started melting and slowly deforming because of gravity. This is a really bad problem, since this dryer also has the opportunity to contain two spools that rotate independently, so if I'm using one of the two, the other will melt. This could be corrected in an updated model by moving the hot air flow on the rear of the place instead of the middle. This is the first modification I will suggest the producers. The second one is: this looks really great with the squared case, but would be even better with a less intriguing design rounded on the top- front and rear borders (like all other models have), creating a better air flow. If both these modification should be made in a next version of this dryer, I'm pretty sure this will be even better. (another idea could be having a small electrical engine rotating the rollers when not in use, but this would require a more complicated UI to set whether to move or not)

Great video, thank you!

Great video, you got my subscription with this :-)

Your channel really stands out in the way that I can feel you have the constant hunger for improvement and knowledge. I really hope you get many more subscribers. Is there a way to get the excel with the temperature/relative humidity over time available somewhere?

Exelente trabajo!!! Muchas gracias por compartir!!!

I along with others would really like to see a food dehydrator compared to these dryers. The only reason I ask is because the Rosewill Dehydrator looks like an affordable solution compared to the Eibos.

Great video! thank you!

It’s crazy to me only the eibos actually works. Excellent video! I was about to buy a sovol

Thank you for this video, I have a Sunlu one, but I added fan to it and some circuitry for the fan to be only on when the screen is on and moved the thermal probe up so it really heats up.

Good video, I'm curious how good the Sunlu would do with gel in the middle of the spool. Being the most quiet with the gel it might be a really good option.

Good job on the video!

Hello, a great video and informative, I do own a Sovol unit but it has the brand Comgrow on the front. However in the instructions it state the cover should be left slightly open to allow the moisture to escape. The cover catches also function as a lid rest to hold the cover open and I find the humidity drops quickly once the lid has a 10mm gap. Without doing this the unit is seals and so the moisture can only condense on the kid. I shall buy a eibos unit and test it also. Many thanks Danny

Very helpful! Thank you

Very well made comparison > merci!

i use the Sunlu one with no fan. Just dried some TPU that was full of moisture, worked ok. I cover it with a small towel so it insulates the top better, and put desiccant in the spool. I have it running right now, with a hygrometer inside. It settles around 102-106°F inside, currently at 19% humidity. My thermostat says it's 77 ambient @ 39% humidity in the house and 71% outside, as it's been raining a lot here.

Sovol recommends running theirs with the lid cracked open. In this sense, the unit was not used per the instructions. Running with the lid open, however, would likely slow the initial warmup time further and may allow the surrounding environment temperature to influence the maximum achievable temperature inside. I think the lid's sealed nature is also aimed at using it as longer term dry storage when the dryer is off. The clips are designed such that the lid can stand ajar on them while running as an active dryer and this allows the humidity to escape. Still, performance may be slow. Also, I note from my own use that the Sovol dryer gives off some heat to its surroundings and as such perhaps the test should be run with the dryers spaced further apart to ensure no interaction between them. I do like the idea of the test though. Setting all to the same temperature target might be more useful for comparison unless the point was that a superior range of temperature can be beneficial (assuming you stay below glass transition temps).

You should add real power consumption in the results table, that will be great. Great video, thank you.

Ended up buying the Eibos one. Seems to be the best of all of them. Its quite pricey for what it is but its an investment and being able to dry 2 spools at a time means I can run 2 to power my 4 printers and can ensure that the filament is dry 100% of the time. It also means im not annoying my wife anymore using the oven. I own a sunlu, Sovol and esun dryers but they are all a bit meh. The sovol is decent because of its seals but it just doesnt have the power needed to heat up 2 spools, and the moisture gets trapped. Seems like the only one that doesnt is the Eibos, and theres some neat plugs on thingiverse you can print in tpu to plug the holes when its not drying.

*Excellent* video, by the way! Very well done! Please also post your circuit diagrams (if any) and code, so others can duplicate your setup and validate (academically cross-check) your work.

Thank you for information. liked and subbed

This is awesome, thank you for the greatly designed experiment and clearly presented results! I am only interested in the dual spool devices, Eidos Cyclopes and Sovol 3D in this case to swap my filament spools for print tasks that last several days in a row. I don't understand why, in the Relative Humidity % plot the Eidos starts at 50% while the others start at around 70%? I think Eidos is designed as a dryer while Sovol can't decide whether it's a heater or a dryer. I can count 17 outlet & air vent holes in Eidos and only 2 outlet holes in Sovol, so the latter cannot efficiently release water vapor when lid is closed. To get a better sense of the drying capabilities of the Sovol, I drilled 2 extra holes in its cover and removed the outlets from the two original holes; then I put two recently open spools in it and set the temperature to 50 °C. By the time the temp monitor reached the target value (about 20 min), humidity had dropped from 45% to 32%; after 4 h it dropped to 22%. However, I think the Eidos still beats the Sovol because of its better air flow design: in Eidos, air flows from bottom to top and out; in Sovol, air has a circular movement around the spool axis.

new subscriber excellent video

Good work!

Thank you. Very useful)

I own a Sunlu dryier and was indeed not impressed by its drying performance. I did very similar to you with the humidity and temperature sensor inside and found out that 2 10mm holes, one in the bottom below the heater element and one in the top greatly improved the performance. Humidity inside the box dropped from around 55% to 15% in half and hour. The temperature inside the box was actually higher (don't remember the exact number but about 5 °C) with the holes versus without. Drilling 2 more 10 mm holes did not help any more. So I ended up with 2 10 mm holes one in the bottom and one in the top on opposite sides to improve the design.

What you measure is pretty much exactly what I experience: most of those boxes are filament heaters, not filament dryers. After I saw condensation at the top of my Sunlu for the first time, I added a fan and now keep the lid open a crack. Same interior temperature but no more condensation since then...

Thanks for your work! I needed exactly this. The eibos is expensive and I only need a one slot dryer. Do you have any results printing nylon from the eibos easydry? Do you think the 50degrees are enough for it or should you need the 70degree?

At the end of the day the Ebox Lite has never not dried my filament so I will continue to use it. I don't really see any advantage upgrading to the eibos for my purposes, but great video.

Im glad I bought the esun lite today 😅 got it for cheap and normally I check online reviews and videos with tests but I had to be quick. Looks really great. I got some PLA that just breaks so easily and another one that’s weirdly printing with holes. Really hope this does the trick😅

Excellent video like a lot of them I have been watching here! Question, will you be getting the new EIBOS EASDRY series X to review?

I haven't used any of these but I highly recommend the Print Dry Pro. Then store the filament in an airtight container with desiccant

Awesome video!! Tnx 🙏

Super test. But wouldn't it be interesting to carry out this test in a classic fruit dryer which is taken as an alternative to specialized dryers directly for filament?

This guy is so good.

Thank you Igor

Watching video now. If you don't do it, you should also have a control sponge A) sitting on the table in ambient air, to see how well evaporation works on it, and B) another one in ambient air with a room fan on it, to see how well convection at room temp dries it. These would be good baseline comparisons against the filament driers.