SUNLU Filament Dryer S2, Black

I love this dryer, works so well for drying my nylon filaments and fits on the top of my printer so I can dry and print at the same time. Looks cool, love the value on this as it works well and is so simple to use. Greatly increased the print quality even on my PLA prints.

This works great right out of the box. I have my TPU sitting at 19% humidity in Florida summer, the quality of prints instantly improved. For PLA or even wood, you can print right away without any problems but with TPU, it's best to let it sit for a few hours or until the humidity reaches 22%. you can print a tray that will basically attach the device to the side of the printer. Make sure to get some PTE tube to run from the dryer to the printer so it doesn't pick up any moisture on the way to the hotted. Great purchase and I may get another to add to it soon.

I really like this dryer. It does dry well, reaches temperature fast, and my unit does get down 12% humidity when drying. I don't feel like I need to vent it every hour to get dry filament. I find the touch screen very easy to use. You don't need to punch a single button 15 times just to get it started. If I am drying petg and that is what I dried last, the setting remains, and I can just put my filament in and let it go. I do find the LED distracting, but it can be easily turned off. As with all dryers, this does make a high pitch whine. Not as bad as the S1 version or the creality dryer which I bought and returned because it was too noisy. (I can hear the creality from another room.) The hole for drying while printing seems a little rough and a more secure and capped version would have been nice. There are plenty of mod videos on youtube if interested.

Because we have to print a lot of engineering filament like asa cf, it is pretty important to keep the materials dry. This little unit is perfect for our P1S. Works great and super easy to use.

Awesome... I've rigged this thing to operate as an inline PETG filament dryer, so the printer, when it pulls filament, it has to pull it out of a dried-out container and through this dryer before it melts it, and so far, it has changed prints from fuzzy and poor looking to smooth and excellent again!

Not really happy with it. Not sure if I am doing something wrong but I set it, it dries, says about 26% humidity, look at it again and filament is reading about 34%. Seems to be a huge fluxuation with in an hour after "it dries". I wanted this to "pre" filament for next project.

I bought this with high expectations based on the reviews but based on my experience after having owned this filament dryer for 2 weeks, I should have read the reviews a little closer. I'm using this for both a printer with a Bowden tube and one that is direct drive and this dryer doesn't really work for either. The first thing I noticed which is a major design flaw is that there is no vent or fan on this enclosure to remove the humidified air after the filament has been heated. The best you can do is look for an STL on printables or thingiverse (there are many since this is kind of a huge oversight) for a wedge to insert in the opening to vent the humidified air out. Secondly, there are two PTFE lined holes for filament to exit the enclosure but they are both positioned in a manner that is poorly adapted to allow the filament to flow out of the enclosure easily. No matter how you place the spool or the dryer itself, the filament binds and causes the whole machine to be pulled towards the printer which will interfere with your printer's mechanics while it is actively printing. The rollers at the bottom of the enclosure to allow the filament spool to spin freely are not adequate enough for this device to work reliably while you are printing. At best, this machine is good for drying a roll while not in use prior to storage in a ziplock bag. And again, there are many 3d printable solutions available on thingiverse and printables to address this problem, but for a $70 plastic box with a heating element and a PID, this should not be the case. What I do like about this dryer is the large display with touch screen which is easy to read and navigate for changing settings. The timer also can be extended for long periods of time so no matter how long your print lasts, the dryer will be active. Aesthetically it's pleasing and the LED lights can be turned off so that it won't be bothersome if you have it in a location that that would matter. Unfortunately the major functionality is flawed and requires you to 3d print a solution to make it work properly and that, to me, is unacceptable for a dryer box that costs this much when there are well made solutions that are significantly cheaper. If you are considering buying this dryer, the convenience features of the nice touch screen display do not outweigh the inability for this device to dispense filament on the fly while printing. Look for a different dryer and save yourself some cash. I'll likely return this if they accept it back without a box. Highly disappointed - Sunlu usually does better than this tl;dr Pros: easy to read and navigate display, can set it to remain on for many hours and will not turn off mid print Cons: Poorly designed - no vent or fan to remove humid air from the enclosure while running. Filament will not dispense smoothly from the enclosure due to poor outlet locations in the lid which cause the filament to bind and your extruder will drag the dryer into the printer itself causing major problems and possibly break your 3d printer. There are 3d printed solutions available but you shouldn't have to do that for a $70 dryer. Avoid this product.

Overall, this is a great filament dryer with a few areas that could be improved. I'm able to use 4 year old PLA filament that's been exposed to extreme humidity as if it were brand new! Print quality is excellent with little-to-no stringing on filament that previously showed many flaws and stringing during printing. Very satisfied with the overall functionality and capabilities of this unit. I'll continue to use the S2 for drying out and printing old filament, however, there are a few shortcomings I hope are addressed in a future design revision: The lack of an exhaust fan or vents means humidity just builds up in the S2 during the drying process, so the cover needs to be opened a couple times while pre-drying very 'wet' filament to clear out the humid air. Once the filament has been pre-dried, the S2 can be run enclosed without venting...still, it would be great if Sunlu had integrated an exhaust fan. This can be mitigated to some extent by placing silica in the center of your spool, which will adsorb humidity released from the filament during the drying process. The single filament port is limiting as far as how the S2 can be placed. Other filament dryers have multiple ports where the filament can be fed out from (it angles upward, which isn't optimal for filament spools placed above a printer, but works with a long enough PTFE tube run). It would also be nice if they had integrated a PTFE tube w/ fitting, although the stock port does allow a 4mm 'bowden' PTFE tube to fit snugly, so is acceptable for a full dryer-to-extruder reverse bowden setup. Finally, the included power supply has a painfully short cable length....maybe 3-4 feet. I have to use an extension cable to allow it to be placed on top of a double stacked LACK enclosure and connected to a standard height power outlet. Pros: nice aesthetic design & great functional touch screen controls. Highly functional drying of old 'wet' filament. Full-spool heating elements. Silent operation. Easy spool loading and smooth spool rolling action. Cons: very short power cord, only one filament port, no exhaust fan. Angle of filament port may not be optimal for all setups, especially if the dryer is placed on top of a printer enclosure Overall very satisfied with my purchase, but do hope Sunlu continues to improve on their design in the future.

フィラメント乾燥に利用中。コンパクトで良いと思います。効果・耐久性は現在確認中。

I have a couple of filament dryers and this one is easily the best, with flexible options and programming for multiple filament types. It even re-energized 8-year-old PLA into perfect printing condition!!! The only drawback is it has one hole to pass the filament through, which makes placing limited (although I don't use it like that, for me it is standalone).

This will topple over and fall if you try to feed filament directly through it. It's 4 legs are not properly secured. I have tried several positions and it has fallen 5+ times already. I finally stopped trying and printed my own feeder.

様々な機種を調べた結果、べた褒めされているこの機種に辿り着きました。 上下のヒーターで加熱するファンレス仕様なので、静かでいいです。 操作もしやすく見た目もスッキリしていて良いのですが、使用している3Dプリンターと相性が悪く、 フィラメントの送りがしくい状態です。 排出穴が乾燥機上部側にしか無いので、下からフィラメントを供給するTINA S2と接続するとフィラメントがS字になり引っかかります。仕方が無いので3Dプリンターよりも低い位置に降ろして使用しています。 下向きにも排出できる穴があれば同じ高さで設置できたのですが... 製品自体はとても良いものです。

付属のユーザーガイドは英文だけでしたが、その裏表紙のQRコードから取扱説明書にアクセスできました。あまり期待していませんでしたが、日本語も用意されていて（一番最後でしたが）よくある妙な翻訳でもなく分かりやすかったです。ドライヤーといっても加熱するだけで、除湿するものではないです。