SUNLU Official Filament Dryer S1 Plus, Built-in Circulation Fan, Filament Dryer Box Storage Box for 3D Printer Filament 1.75 2.85 3.00, S1 Plus White

This works great!! My house is super humid, like 50-60 humid and this keeps the filament dry. It also has a timer so you don’t accidentally leave it on for too long and damage your filament. It has a tiny hole at the top where you can run the filament through so you can warm while you print.

This works great to prep my filament for 3D printing. Highly recommend.

Moisture content seems to be low on a PET-G filament I cooked in here. Although, it also warped the PLA spool, which I thought was kind of interesting. Looks good, small, and probably not a bad idea for a starter. If I could do it again though, I would buy a multiple chamber/roll filament dryer.

If you don't already have a filament dryer, get one. And while you're at it make sure you get this one. I use this filament dryer for every print job. I start it up hours before the print just to make sure the filament is dry and I print straight from the filament dryer. This seems to do a pretty good job at removing moisture. Prints never looked so good.

Works well, inexpensive!

rating five stars, because it does exactly what it’s supposed to — it dries your filament. however, i am returning mine simply because it doesn’t work well in combination with my Bambu A1 w/ AMS Lite. the position of the filament dryer’s exit port is angled too sharply to feed smoothly into the AMS Lite’s motorized grabber thing, so it winds up bending and binding.

Generally I don't have an issue with any of the PLA that I use. Purchased this to try some TPU. Can't use TPU on my AMS lite so now I will be able to dry and feed from this dryer without a large investment.

Update: I've been forgetting to update this for a while now. After using it only about a dozen times for 8-12 hours each, the fan bearings gave out and made it very noisy. So it lasted less than 6 days of actual use. File a warranty claim you say? I did and only received crickets. Very disappointed. It's even designed in such a way to make it very difficult to work on it without tearing it apart. Poor quality product from a useless company.This Sunlu Filament Drier is really low quality and feels cheap. There are 2 buttons on the front with no markings nor indication of what they do. They could have at the absolute very least put a "T" for temp and an "H" for hours on the buttons. Comes with tiny PTFE tubes without any mention as to what they are for, not even on their YouTube video. There is a plastic plug that is supposed to go in the unused hole, but it is poorly sized and poorly implemented so it constantly falls out.How about turning it off? Well, you have to turn you time down to 0 hrs, 1 hr at a time, then hold the left button to get it to shut down. Most times it is just easier to unplug the darn thing.The instruction are very vague but enough to get you going with regards to what the buttons do, but this doesn't give them a pass for not being marked on the unit itself. The vague instructions tell you to scan a QR code to download the full instructions. Why? You already took the liberty to put a glossy, full color pamphlet in the package. Just give me the last few pieces of information! Like what the extra PTFE tubes are for!The unit falls back if you open the lid without any filament in it. As it heats up, any moisture turns the unit into a sauna because there is no directional air flow into and out of the unit. Meaning for it to work correctly, you would need to open the lid to get some fresh air in there.What I do like is that it says it can go to 55° C which is higher than most at the time of purchase. That said, who knows if it actually goes that high. It looks nice for the most part. I like that they implemented 2 holes for filament to go through as it is nice to have options. I will likely keep both holes open since the plug doesn't stay in place very well in the first place and secondly, the 2nd hole can serve as an outlet for moist air to exit. Time will tell how long it lasts.Ultimately, I regret buying this one and expected better as these have been out for a long time now. :( I only give it 2 stars because it does work.