【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.

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.

The media could not be loaded. SUNLU S4 dryer - Even if you don't think you need a dryer, give this one a try, and I promise you will get better results. If you like to switch colors or muti- print, then this is the dryer for you. The S4 is modern looking, with the big LCD screen and green lights that run across the front of the dryer. I usually print PLA and PETG, but the S4 will dry almost all filaments. It has a temperature range of 35C to 70C. The S4 heats up very fast. In fact, twice as fast as the S2 dryer. There are 3 powerful fans, and you can feel the hot air circulating to dry the whole chamber evenly. The S4 comes with several built-in safeties to monitor the temperature and send an alarm if anything is abnormal. The touchscreen allows you to set the dry time, tyes of filament, etc. It has a humidity sensor to display the humidity percentage. You can set to dry for 99 hours or anytime in between. Set it to MOD 2, and it will come on when it reaches 50 percent and dry until it reaches 25 percent and stops. That is a great feature if you plan to print later but want the filaments ready when you are ready. There are two PTFE filament couplers on each end and four on the top. The PTFE tubing is included with the dryer. You just push down or in on the coupler to install or release the tubing. This is great for printing straight frm the dryer. Overall, the S4 has been amazing and has made my printing easier with better results. I would recommend this dryer to everyone!

Really cool filament dryer. I have always avoided dryers because I didnt want a food dehydrator kicking around that gets used once a year, but this dryer is awesome. It can dry 4 at once, the leds and metal feet are so sleek. It is a little louder than I expected, a little louder than a printer running. There is space in the bottom for dessicant. The screen is a little more cost effective than i was expecting but it works. I hope it lasts me a very long time.

Works great as intended, keeps moisture out of filament and is not super noisy like other dryers. You can also feed the filament into your 3d directly from the dryer since it has rollers and bowden connections. The vacuum bags are a nice plus to keep your filament dry when stored.