【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.

Works great. I like the storage feature but will generally redry just prior to use. I don’t use the feed feature currently and only use this for drying/storage. Because of that, I can fit 6 of the sunlu rolls in the dryer with no issues. Only 4 fit when feeding printers from the unit, as stated in the specs.

This large footprint dryer is perfect for me. With a Bambu X1C, I often have the need to dry up to 4 rolls of filament at a time and this fits my needs.Have had no issues with any prints after drying rolls. Dries all my different filament types, PLA PETG and TPU.If you need a dryer that has room for 4 rolls at a time, this is a perfect dryer.

I ended up using this as my main AMS for my A1. Cheap and easy way to have an enclosure that keeps everything dry while printing at the same time.

The best value there is for a filament dryer currently in my opinion. It has 4 slots, up to 70C and can run up to 99 hrs continuously or you can set it to mode 2 so if the humidity gets above a certain % it automatically turns on. It also has a bunch of PTFE connectors on it so you can feed directly from it.The free vacuum bags it comes with are nice however the vacuum tool is very cheap. It is also very hard to use the vacuum tool without printing a spacer that goes into the vacuum bag.

It is a large dryer for good price with some fallbacks.The rollers tend to gum up or something and stop rolling smoothIt’s kind of noisy but it is a 4 spool dryerIf your spool is 100g or less in material it will lift it up into the lid when feeding up and out of the lid.

I love this dryer. It’s easy to use. No issues at all. I even feed TPU direct from it into my P1S

I purchased this filament dryer and was quite excited while awaiting its arrival. Upon arrival the two lids were broken off even though there was no damage to the package. The lids are held on by one pin on each side both of which were bent when the lids came off. With my pliers I was able to straighten them out and reinstalled the lids.Drying: This dryer does an awesome job at drying the filaments and was almost plug and play.Feeding: The major issue seems to be with printing from a filament that was in this dry box. I started having major under extrusion which made me investigate. I then realize that it is a nightmare to try and print from this box. It seemed that the bearings don't spin freely which caused the full spools to twist and falloff the rollers. The position of the ptfe holes in relation to the spool creates addition friction that my extruder just cannot overcome.Conclusion: If you are looking to just dry your filament, then this box will get that done no problem. However, of you want to print from the box, then this is not the box for you. I will return this item because one of the reasons why I purchased it was to be able to print directly from the dry box.

This dryer is larger, but it is well worth the space it takes up. If you are looking for the ultimate filament dryer, this is it.