【2025 Special Bundle】 SUNLU Official Filament Dryer Box S4,Four-Spool 3D Printer Dehydrator with Rapid Heating, Auto Humidity Control, and Advanced Triple Fan Upgrade, Fits PLA,PETG,ABS,TPU,PA,etc.

Solid drier. I print a lot of filament and a single spool dryer just wasn't going to cut it for my needs. This 4 spool dryer works well and does exactly what i need. I really like that it has outlets for using as a dry and print box. I print directly from this dryer on my bed slingers and the quality had really improved printing from a dry roll. Keeping your filament dry is keep to reducing stringing and having it stay within the box helps reduce tangles. The dryer has a solid amount of preset choices for temperatures for a variety of filaments, but you can fine tune it for any specialty filament. My only wish would be that it was split and could dry 2 types of filament at the same time. However I just throw them in as a little extra temperature doesn't appear to affect my PLA when drying with PETG.

This SUNLU S4 filament dryer absolutely works like a champ. It heats up quickly, maintains a stable temperature, and the automatic humidity control is a great feature that I didn’t realize I needed until I had it. I love that it can handle four spools at once—super convenient for anyone who prints often or rotates between materials. The upgraded fans circulate air evenly, and I’ve already noticed a big improvement in print quality with moisture-sensitive filaments like PETG and TPU. The whole unit feels well-built and easy to operate. If you want a reliable, efficient filament dryer that just works, this is a great pick.

The Sunlu filament dryer works well. All of their products are great quality at a decent price. The customer service is great. It's easy to operate just remember to rotate your spools. It comes with a few tubes ready to connect to your printer.

I have been using the JAYO S1 for a while. It is the most basic of filament dryers. To say the S4 is an upgrade would not do it justice. the S4 is in a completely different category altogether. The S4 comes with a few pieces of tubing so that you can run the filament to your printer without exposing to the open air. Also included are some desiccant packets that can be placed inside the compartments under the spools to provide ongoing dehydration. Each of the 4 spool locations has an option for the filament to load out of the top or out of the end. Overall 8 different output holes. Each output is equipped with a connector that is designed to hold a bowden tube securely. For the outputs not in use SUNLU has provided small rubber plugs to keep the unit sealed. The build quality of the unit is excellent. Everything feels solid and well engineered. There is a lot of plastic, but it doesn't feel cheap or brittle, which is important given that it will be going through a lot of heating and cooling. The feet of the unit are actually metal bars instead of just plastic nubs or stick on rubber. It is this attention to detail that makes it feel like a luxury item. Getting started was really easy. I just plugged the unit in and turned it on. After selected the filament type from the menu all I had to do was let it run. The fans start circulating the heated air immediately and all the items in the display tell you the status. You can see the humidity decreasing on the display within minutes. The internal air circulation allows for very fast drying! I appreciate that the display is backlit for easy readability. My favorite feature of this unit is its ability to monitor the internal humidity and initiate drying when it rises above the selected threshold. The default is 50%, but it is can be set to your desired percentage. For humid environments this could be its best feature for sure! Of course you can adjust the temperature and humidity settings once you have selected from 1 of the 6 built in filament options. It is all very easily done from the front display and control panel. If you want you also enable an LED light to indicate when the unit is actively drying. You can also switch the unit to Fahrenheit or Celsius units for display. The unit is large, so plan for it to take up a fair amount of space. My hobby room is packed, so I had to get creative to make room for it. It is approximately 42cm L x 22cm D x 31cm H. I have seen a few other dryer on the market, but with the unit being able to actively dry 4 spools at a time, it is the best I have found.

Four stars only because when you’re using a multi filament 3-D printer whenever it changes filament it back, feeds the filament and this has no way to wind the schools back up it kind of just create some slack inside the dryer. Other than this, it has caused Little to no clogging. And has really improved my filament and print quality. It has plenty of temperature ranges and humidity settings that you can customize to your liking.

great for drying filament and works with different types of filament and lots of settings

Have had this dryer for a little while now and it was supposed to take the place of drying my filament in my custom built reflow oven, but it doesn't keep the filament dry after the initial cycle as described. The dryer can run for the specified amount of time or longer and I have found that i get better prints running the old way. This dryer is not designed for it's intended purpose unless you live in maybe a low humidity area. dry boxes with desiccants do better. Even the indicating desiccants in the bottom of the dryer never seem to get dry even at a 15hour cycle at 75C so there is a lot to be desired with this machine.

I’ve been using this for the past six months and I would say that it is pretty effective in drying out your spool, most of the time when you press power on it runs on an automatic six hour cycle with the set temperature that you have on your machine. I do not have to re-dry after six hours on a lot of my school however certain filament such as TPU, you have to leave it in there for longer, but overall the machine does what it’s supposed to do as advertise. I am very happy with the Sunlu four spool dryer machine. One addition that I made to the machine is printing a larger handle for the dryer and it is much easier to open that way you can also print a handle to hold the both of the flaps, however, I find that it is not necessary.

Werkt perfect en heeft ook nog een zuinige bewaarmodus. Kan 4 rollen tegelijk drogen / opbergen.

Does as it says , quick , efficient, what else is needed? Thankyou Sunlu !

Acheté car j'en avais marre des filaments avec de l'humidité, qui faisaient des bulles et des fils. Et bien je peux dire que c'est génial. Le boitier ne prends pas trop de place ' pour un appareil pouvant contenir 4 bobines en même temps) , il ne fait pas trop de bruit, et est vraiment efficace. J'adore, Je passe toutes mes bobines dedans avant d'imprimer maintenant, même les neuves sortie de sachet. Si on devait être chiant , je dirais que ça aurait été top si on avait pu avoir une cloison dans le boitier pour séparer en deux côté et pouvoir avoir deux réglages différents, mais je chipotte

Verpackung & Design Die SUNLU Offizielle Filament-Trocknerbox S4 kommt ordentlich verpackt an und macht einen hochwertigen Eindruck. Die Box hat ein modernes, kompaktes Design, das sich gut in die Werkstatt oder das 3D-Druckumfeld einfügt. Die Verarbeitung ist robust, und die Tür lässt sich einfach öffnen und schließen. Funktionalität & Nutzung Die 4-Spulen-Trocknerbox ist ein echtes Highlight für 3D-Drucker-Enthusiasten. Ich benutze sie, um verschiedene Filamentarten wie PLA, TPU, PETG, ABS und Nylon zu trocknen, und sie funktioniert wirklich gut. Die Temperaturregulierung ist sehr präzise, und die schnelle Erwärmung sorgt dafür, dass das Filament in kurzer Zeit die optimale Trockenheit erreicht. Besonders praktisch ist die automatische Feuchtigkeitskontrolle, die dafür sorgt, dass das Filament stets in der besten Form bleibt. Leistung & Zuverlässigkeit In meiner Anwendung hat der Filament-Trockner die Feuchtigkeit zuverlässig entfernt und das Filament von Anfang an gut getrocknet. Egal ob PLA oder Nylon, das Filament bleibt auch bei längerer Lagerung optimal verarbeitbar. Fazit Der SUNLU Filament-Trockner S4 ist eine hervorragende Investition für 3D-Drucker, die regelmäßig mit verschiedenen Filamenten arbeiten. Die automatisierte Feuchtigkeitskontrolle, die schnelle Erwärmung und das präzise Temperaturmanagement sorgen dafür, dass das Filament stets in Top-Zustand bleibt und der Druckprozess nicht durch feuchtes Material gestört wird. Ein sehr praktisches und zuverlässiges Gerät, das sich definitiv lohnt.

bambulab A1とAMS liteを使用している環境で、プリンターで印刷した除湿ケースから乗り換えました。 ＜プリントして使用する除湿ケースの難点＞ ・スプールとケースのマージンが少なく、スプールの出し入れが難しい ・その為出し入れの際に再生紙製スプールが壊れそうになる事も多かった ・ケースと送り出し機構のアライメント調整が難しく、フィラメントにかかる負荷が高くなって印刷に不具合が出ることがあった ・ケースに窓を設置していたものの、真上から見る形なのでフィラメントの残量が分かりにくい ・除湿用のシリカゲルの交換タイミングがわかりにくい＆忘れがち 本製品とAMS miniを印刷して組み合わせることで、上記の不満点が全て解消し、とても満足度高いです。 ＜フィラメント送り出し用の穴＞ フィラメント送り出し用の穴は蓋と横壁の2パターンありますが、 蓋が開けやすいので自分は横壁から出す方が使いやすく感じました。 PTFEチューブに多少余裕を持たせてやれば、送り出しの負荷が高くて不具合を起こすこともありません。 ＜自動除湿機能＞ また、自動除湿機能が想像以上に便利です。 湿度が30%を上回ると自動的に除湿し、常に30%以下に保ってくれます。 シリカゲルの状態を気にする必要も、入れ替える必要もなくなり、快適です。 （湿度何％を上回ったら除湿するかは任意で設定可能） ＜フィラメントの確認＞ 蓋を開ければフィラメントの残量確認や、絡まりの解消もしやすいです。 ＜動作音＞ 動作音もプリンターと比較すると静かなので、自分は気になりませんでした。 値段は高いですが、それだけの価値はあり、プリント環境が非常に快適になったので満足度は高かったです。