Polymaker 3D Printing Filament Dryer and Storage Box - PolyDryer and PolyDryer Box for Filament Drying and Sealing with Heat Control, Compatible with PA Nylon, PLA, PVB, PETG, ABS, TPU 1.75mm 2.85mm

The storage container is great. There are two ports for feed tubes, so you can pint right out of the container. The included hydrometer makes it easy to see moisture levels. There is a silica pocket within the hydrometer, that helps to maintain proper levels. At the bottom of this container, there two plugs, that can be removed, so the container can be placed on the dryer dock. I have later bought one more container, this time with dry dock. Dry dock does not work very well. It takes long time to dry the filament, and moisture levels never go below 30%. The container however holds moisture levels low, for long time, if loaded with dry filament.

Great value and performance. The dryer portion doubles as a desiccant-gel-bead dryer with a 3D-printed attachment. This dryer and storage box are a must-have when printing with ABS, ASA, and other hydroscopic filaments that require active drying and dry storage. The ability to print with this filament without opening the container after drying is a huge plus. I will be adding more storage boxes to my collection in the future for use with TPU.

I have been eyeing this product and the associated dryer for sometime since seeing it on Youtube and getting a new Bambu Labs A1 printer. The concept is great, but the price really makes it impractical. I guess if you have disposable income, this would make a great system to dry, store, and use your 3D printer filament, but if you're like me, you have a LOT of filament. I can't justify $30 for every filament I have that needs to be dried and stored dry. I picked up the dryer/case and an extra case when they were on sale. The product is well made and super easy to use. It works exactly as designed. There is no way to set the actual temperature and the filament does not rotate while being heated, but I don't think either of these really detract from its usefulness. I have used it to dry PETG filament and gotten excellent prints from it. If you can stomach the price, go for it. If you catch it on a sale or the price drops, get the heater and a container or two. I built some DIY Filament Dry Boxes out of 3D printed parts and some airtight plastic cereal containers for about $7 or $8 each (including parts, filament, etc) and they keep the filament at 10% humidity. I use the dryer and then transfer the rolls to the cheap dry boxes. (rinse and repeat) Just do a Youtube search for DIY filament dry box and there are some excellent videos detailing how to make them.

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!!

A very well engineered product that feels solid, looks great and works great. I purchased just the storage container and filled the bottom with desiccant. The included length of poly guide tube is a nice touch, it slid perfectly over my printer’s guide tube. Now I leave a filament loaded in the printer all the time and it’s entirely enclosed.

I print mostly PLA, with very occasional Silk or Matte. (I have yet to need to print with PETG). With Silk and Matte, and especially PETG, requiring low humidity levels of 20 to 30 for perfect prints, I was looking for a way to not only dry those rolls, but then keep them dry for extended periods of time until I actually need to use them for a print job while ensuring the humidity levels remain low enough to simply take the roll out and print from my ams lite. (The box does allow to print direct from it without removing the roll, if that is your preference). This is where the Polydryer and Polydryer storage box are the perfect solutions for me. Not only does the dryer work extremely well to dry my filament rolls, but I am then able to keep them dry for months at a time versus being forced to dry for hours and immediately print. When not drying, the actual dryer has a very small footprint which is also a huge plus for me. If you don't print filaments susceptible to moisture often, this might be the perfect option for you too. 🙂👍

Very well-built and thoughtfully designed. The box seals tightly, feels sturdy, and keeps filament reliably dry. The spool runs smoothly, and the viewing window is a nice touch to quickly check how much is left. I especially like that you can feed the filament directly from the box — no rewinding or mess. It also looks great and fits nicely into a printer setup. One star off because the price is a bit on the high side. Otherwise, it’s an easy recommendation for anyone who values clean, dry filament storage.

willy fox

Useless. No proper seal, huge, costly. Fortunately he came late and I received my money back, otherwise I would have sent it back…

Se siente de buena calidad, la idea de poder solo utilizar el recipiente como almacenamiento me gusta mucho, y me ayudó a salvar mi filamento, hay que leer bien que versión compras porque también puedes comprar las cajas por separados.

Outstanding product. Packaged very well and secure for shipping. Printing mostly PETG, they keep my filament in a perfectly workable state after dehydrating. The digital hygrometer is very responsive and accurate enough for the use case give or take 1-5%. They are nice and compact fitting nicely on shelving for storage. I am a little worried about the clamping sides as they are slightly tough to snap on and engage. Putting the lid on slightly wrong may result in breaking those clamps. I would keep an eye on this. The filament holes on the top and front are great for their use case. I look forward to purchasing more of these as my color library continues to grow. Highly recommended 5 Stars.