Polymaker Filament Dryer & Storage Box Polydryer for 1kg PA Nylon PLA PETG

I paired this with some color-changing desiccant beads and an adapter that allows you to dry two filaments at once, albeit more slowly (search online for PolyMaker PolyDryer - Double Barrel Mod). Works great.

Works great. I do have some suggestions. It's very loud. Wish I could mute the beep and the lid clasps could be quieter. Also wish I could do a delay start. It would be really handy to time a dry so it's done right when I get home from work.

TLDR: They work great for the enclosed python ams. I run 2 in the back of each of my python units. I hate the power bricks. I’ve melted a spool on accident on the highest setting. I like the modularity. I haven’t had issues with storage in the containers. Long/in depth part: I don’t have exact measurements from a thermometer, but considering I melted one of my spools (the spool, not the filament) when having it on the highest setting to dry, and the box discolored/warped as well, I think it gets hot enough. Given the spool was very large because it was a tpu spool from geeetech so maybe that caused issues? The little blue spool holder thing didn’t even lift the spool but it fit in the box just fine so I went for it. Maybe I got units out of spec compared to everyone else? Whatever the case, they work awesome. They’re all mini dragons of filament drying goodness in my setups. I have 5 of them. 2 for each of my python ams units (in the back of the enclosure), and one freestanding for the one off spools I dry every once in a while. The freestanding one is the one that did the melty bit above. I also bought these for my python ams and have been able to sustain temps past 120°F (what my internal thermostat can measure to. I got cheap ones okay?) at the front of the unit (2 dryers in the back on full throttle), so that gets plenty hot too. With all 4 units running (my pythons are stacked right on top of one another), things can get toasty in the upper unit. Given it takes 2-3 hours to reach temp, but sustaining past that is no problem. More exotic filaments that are needing the additional heat I do in the boxes on the single. It’s just easier to keep them in the boxes as I use them. I think they work fine for what they’re advertised to do and as a modular system. Yeah it’s not like those crazy expensive 4 spool units but it’s good for the money. I always dry longer than recommended just because it takes time for the entire container to get up to temp. My only complaint is how big the power brick is. I can only use 1/2 the plugs on my extension cord and I don’t feel like doing shenanigans with replacing them with something else. The biggest mod I did was removing the sticker with the settings (it was an accident at first thanks to tape, but it looked good enough to where I decided to roll with it). That way they’re just black units at the back of my ams. The single one still has it on, and the ams ones I never run on any setting but the highest unless I see significant issues.

I needed to dry some PETG filament that had been exposed to humidity (about 50%) for a couple of weeks. At first, I didn’t understand why it wasn’t drying, based on the humidity reading on the included hygrometer. Then I looked at the silica beads and realized they needed to be reactivated because they were dark green/brown. I put them in a heat-proof container and dried them in the microwave about 3 times, 30 seconds each with about a minute pause and a stir in between, and they changed back to orange. I then replaced the silica gel in the container and the dryer brought the PETG down to 15% humidity and has kept it there for days so far. If you’re having problems drying, make sure your silica gel is orange, and reactivate it if it’s not—this is normal. I’m very, very pleased with this dryer’s performance and ease of use.

Problem 1: Desiccant arrive saturated and unable to use out of the box. Problem 2: Once desiccant was dried I opened and loaded a fresh spool of Fiberon PA612-CF into the PolyBox and set the PolyDryer it to the appropriate heat level as directed by the posted instruction. My first print was going to take a few hours so I set the timer for well beyond the print time to account for moisture absorption during printing. First print came out awesome! But that was the last print to be awesome. During the print I noticed the PolyBox hygrometer rising from an initial 10% humidity to 24% at print completion. I found this odd. I removed the PolyBox from the dryer base, rewound the spool, closed the filament holes and put the box back on the dryer for 18 hours (as per the directions) to dry out the filament. During the 18 hours the hygrometer went from 24% to 21%. I removed the box from the base and installed the bottom plugs. 24 hours later the hygrometer read 10% again and I began another print. *This is where it all went bad. I began another print of the same model and the stringing began immediately. I could hear the tell-tale sizzling sounds of wet filament coming from the hot end. How could I have WET filament after following all of the directions from PolyMaker regarding proper handling and drying of my filament? I dried the filament once for another 18 hours and had the same stringy sizzling mess as before on some retraction calibration prints. I tried it once more for 24 hours and the print quality only continued to degrade due to wet filament. I am very disappointed with the whole system. Considering the cost being much higher than other dryers it only added insult to injury. I am now left with a garbage paperweight that does nothing but take up valuable workspace and filament that should have never reached the point it is at now. DO NOT BUY.

There are a number of things Polymaker did well on this product, but there are a number of things that I would consider a fail. Overall, I think it makes sense for some people, but not for others. Run through the Pros and Cons and decide. Pros: - Modular system - Easy to mix and match bases and boxes or even mod other accessories to improve workflows (like the mods for AMS systems). - Ease of use - Its got 4 buttons and plenty of filament exits for printing from the dryer. All of the exits feed well given the orientation they are designed for. The buttons are clear and for the most part don't require additional instructions to workout what they are for, though you may have to press it once to confirm your guess. - Durable and solid - I can't speak to longevity, but its well made and relatively solid. - Effective for most general filaments - The design is good for most normal filaments like PLA, TPU, and PETG. It has a fan to help evacuate moisture from the system and aid in drying. - Can be run in Continuous mode - Basically an indefinitely drying mode that may be useful for higher temp filaments. Cons: - Loud - Sorry, this is not a quiet machine. It puts out around 60db of noise in its operation. - Not good for high temp filaments - Unfortunately, its maximum temp, measured, was 60C. If you are trying to dry a Nylon or PPA, it will take forever. At 70C those still take a long time, so lowering the temp will likely need a multiple of the required time to dry. - Desiccant comes fully saturated - This initially made me think the dryer wasn't working well. I would dry TPU for 8 hours and, the hygrometer would say 25-30% which is odd. Then I microwaved the desiccant and found the real humidity level was closer to 18% which is what I expected. So, do yourself a favor and nuke the desiccant at the lowest setting in the microwave (defrost) for 1 or 2 mins, and you should be good to go. - Tough to latch - Not a real Con, but something to note. Every box seems to take around 10-15lbs of pressure to latch. - Odd included diameter PTFE tube - It includes a PTFE that is massive. A normal PTFE tube can almost fit in it. Again not a real Con, but the tube is almost useless. TLDR, Good for PLA, PETG and TPU, not so good for ABSs, Nylons, PC, PPAs, or PPSs. With a max temp of 60C, it will make high temp filament drying painfully slow. The modular setup good keeping special filaments dry while drying others if you get multiple boxes.

I like to leave a review when one is worthy, and spoiler alert, this will be glowing. 3D printing is loads of fun with unlimited creativity, but there is knowledge that is gained along the journey. One little tidbit is that filament needs to be dried if you live in a humid area...And some, in not as humid as you would think area. After looking at the design of several devices from Creality, Anycubic, Sunlu, Comgrow and Giantarm (Filament Bags) I finally settled on the Polymaker. As I own an Ender 3 S1 Pro, I'm currently only feeding one filament at a time, so a multi-strand dryer while cool, didn't really make sense to me. I also am limited on permanent space. This lead me to the reduction of choice to single spool. I chose the Polymaker because it allows me to store the dried filament separately from the drying system (Which is partially built-in). The ability to see the humidity level in the box was a big part of my choice and know that the desiccant changes colors so you know when to recharge it. Yup, the desiccant is reusable, not just an individual pouch. And if that wasn't enough, each case comes with a good PTFE lead pipe so you can draw directly out of the case. The case itself is sealed really tight. The seals on the feet (Where you set it on the heated air flow device) also seal very well and have a rubber non-slip base as well. They stack very well too. As for the performance, well it was way better than I expected. When I received the unit, I had some prefoamed LW-PWA that had been out in the open air for weeks. When I put it in the container and let it sit for a few hours, it showed to be at 54% humidity in the container (UP from the 49 when I loaded the filament). I ran it on the forced heated air base for 6 hours as instructed. It dropped down to 41% after the first run. I decided to run it again, just for the heck of it, and it came down to 36% after the second run. After leaving it overnight it was down to 29%, just using the desiccant. Total reduction from 54-29% in less than 24 hours (About 22 hours total). I was very happy with the 25% reduction in that short period of time. Each box can be used without pulling the roll out. There are two options: 1 you can use the ball bearing rollers that are setups in the case, and they are so well designed that in an empty case, the airiflow will turn them, OR you can use the included roll post that ankers very well in the side of the box. The PTFE tubing allows for either vertical or horizontal tapping of the filament. I have minie setup to feed from behind the printer, but may make some changes in the future. Regardless, I know that the system will support whatever setup I choose. The base unit is very easy to operate, has recommendations for the filament drying temps and times listed, and allows you to set it according to that, or you can just set it for constant untimed running if you really wanted to drive it down faster. The foot print is very small as compared to the others I looked at. The power source is a bit large, but designed to not take all the slots on your power strip if using one. It will take up 3 depending on how close together they are. Overall I very much love the design of this unit, along with the well thought out engineering. The whole system seems very sturdy and strong which encourages me on its longevity. The only change I made to the setup was the desiccant color. III already had 2lb of Blue silica gel which turns to pinkish red, so i used that vs the orange that turns green. This was done for two reasons. 1. the color of the box is Blue/Black/Clear and it just looked better. 2. having the silica gel turn Pink/Red just made more sense to me with Red meaning "Stop" in my mind. Thank you for bearing with me ini what is the longest review that i have written in a long time. Should you choose to purchase this system, and it is a system, it wont let you down. Print Happy Days, and everyone will love your prinits!!

All the stars: Dryer wastes no time warming up and driving the moisture out of your filament. Read the directions as you will need to set your filament, thus your temperature setting by pressing the button below the play/pause (start) button BEFORE you start the unit. Set the time you want it to run or accept the default and it's that easy. This dryer made a noticeable difference in my print quality. Smooth layers with good adhesion. The color changing dessicant plus the seals at the bottom of the drybox ensure that you filament will stay in top shape for weeks before needing to be recharged on top of the base unit again. Not all the stars: The fan makes as much noise as your printer, so if it is the only thing running you will hear it. If other devices are running in your workroom, you probably won't notice it. I recommend it and I plan to buy more dryer units and dry boxes.

製品自体もよかったが、 Polymakerのカスタマーサポートの対応がとても素晴らしかったです。 現在の乾燥剤の色は仕様が変わって乾燥しても青色ではなく、オレンジ色およびダークグリーン系らしいです。 説明書の＋−で時間をリセットする機能は搭載されておらず、説明書が改定されていないだけらしいのでお気をつけください。 一度乾燥させてフタを密封すれば長期間乾燥状態で保存できますし、maker worldで改良できるパーツがいくつもあるので、とてもいい商品だと思います。

Drying your filament is up there with washing your build plate - it doesn't seem like something that will have a huge effect but it can make a significant difference to the quality of your prints and whether they succeed at all. Failed or low quality results mean wasted filament, time, and electricity costs. Don't think that adding silica gel cuts it - that can change the relative humidity which affects whether the filament will be absorbing moisture or not, but if it's already too damp it's not going to really dry it out. Unlike most other filament dryers that only handle the drying part and leave the storage as a challenge for you to solve this is a clever modular design that separates the dryer from the storage box so once the dryer has been used to remove the moisture it's immediately sealable for storage and can be used directly from the sealed box. It really is neat, compact, and really works well as you can see from the 20-minutes in shot and the final humidity compared to the external reading. A benefit of this is that you can dry your filament way ahead of when you need to use it, rather than adding an extra 6+ hours before you can print the thing you want to. It works great as a single filament dryer but the real value comes from buying some additional boxes that you could use to store filaments in, at least the more "thirsty" hydroscopic ones such as PETG, TPU, and nylon. There are lots of mods available to print from printables or makerworld to add some venting, allow the drying to dry two boxes at once, connect two dryers to a single box (turbo mode?), stack boxes, or even use the boxes directly to feed a BambuLab AMS lite. The heater is fairly quiet in operation and is simple to use, with the temperature levels and timescales on an information plate on the top of it. The storage boxes feel well made and robust and should hold up to many years worth of use, so they are definitely an investment - getting a few extra provides more benefit over just having the one that comes with the dryer itself.

Set to PETG to dry for 6 hours, but humidity drops 2% and temperature rises to max 40 degrees.

日本語の手順書がほかの言語と違いところがあります。(ほかの言語ではPETGがレベル２ですが、日本語はレベル１に書いています）

I have the dryer and three boxes. These things are the best. I've tried other dryers and they just don't work as well as this model does. No comprimises. It can dry in place. It stays dry. You get a dry box that you can feed your printer out of (without any weird angles). This is a really well thought out and engineered system. Spend the extra 60$ and go with something that works correctly. (( You want the dryer and at least two of the boxes which will be about 60$ more than a one wheel dryer from other companies ))