Polydryer Filament Storage Box for 1kg PA Nylon PLA PETG ASA ABS | Feed 1.75/2.85/3.00mm Filament Directly without Breaking the Seal, Airtight Moisture-Proof Filament dry box with Hygrometer

The PolyDryer system is a total game-changer for anyone tired of the constant battle against filament humidity. The standout feature is undoubtedly the modular design; unlike traditional dryers that pull double duty as a single-spool feeder, this system allows you to decouple the drying unit from the storage containers. Being able to purchase additional sealed storage boxes means you can dry a roll, snap the airtight seals shut, and move on to the next one without leaving your filament exposed to the air. It’s an incredibly efficient workflow for those of us with growing "filament graveyards" who need a scalable way to keep everything crisp and print-ready. The build quality of the storage boxes themselves is impressive, featuring robust gaskets and secure latches that inspire actual confidence in their airtight claims. They aren't just passive bins, either; the integration of a built-in hygrometer and a dedicated desiccant compartment turns each box into a high-tech fortress for your PETG or Nylon. Having a fleet of these boxes allows for a "set it and forget it" mentality—you get the professional results of a dry box setup with the flexibility of a modular library.

I love these dry boxes and their drying base. These things have an excellent seal on them and work brilliantly on the rare occasion I need to print out of the storage box. They come with everything you need including a bar to mount the spool on which makes it a LOT easier on your extruder motor when printing directly from the box. I buy at least one every time they are on sale, very happy with these!

I buy just the feeder box, not the fan driven unit that sits under it. Keeps filaments at ~30% humidity constantly. Have multiple printers and keep all the active spools in these to keep them stable. Humidity here in Texas is wild and these do an amazing job of keeping the live spools dry. I never use the exposed filament holders that most 3d printers have built in. Only these boxes. Seriously great product!

Just got it but very impressed! The Good * Very sturdy construction * Sits flat * Grippy feet - doesn't slide around (Excellent!) * Super strong gasket seal * Bearings seem great, rolls very smooth * Included bar just in case spool is damaged (so you wouldn't be able to use bearings) this bar has a guide that it sits on - super nice * Included reusable moisture beads (more environmentally sound, less trash) * Humidity readout * Excellent packing (all cardboard and only 2 plastic bags total, one of which is reusable) * Ready for their dry base module The Not So Good Honestly the only thing I can complain about is they give you a teflon/bowden tube but it is really thick and won't fit any 3D printer I know of. Overall pretty minor complaint but I can't use this tube so it becomes trash. My Suggestions for improvement * Swap to commonly used teflon/bowden tube sizes and up to 18" to 1 meter in length * Make these dry boxes stackable (that would be super convienent! Other than epic job, these things are great!

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.

Really love the design of this filament holder. The plastic is very sturdy and feels like it would survive a drop and the front screen is really helpful to monitor the dryness of your filament. The addition of the through holes with gaskets and roller bar are there so that you can use this to feed your printer directly, something that seems really helpful for printers without an AMS. I haven't tried the dyer attachment but there are vent holes on the bottom of the container with rubber gaskets as well. It's nice to be able to see the color indicator of the desiccant and to be able to use commodity silica with indicator but filling the bin can be a little messy if you're not careful. In a future revision, it would be great if the containers could be designed to click into one another so they could be stacked.

Works great with my PETG filaments. It maintained the humidity at 38%. Great value for the money. I have been using it with Sunlu PETG filaments and mo clogging issue. Very easy to install and use. Compatible with Sunlu spools.

I really like the modular concept but unfortunately this product just doesn't seem thought through. The bottom airlocks have nowhere to go when you're drying. The compatibility rod also has nowhere to go unless you want to throw it in the bottom where it rattles and can occasionally wedge your roll. The fan barely blows any air even on Level 3; I thought maybe I had a defective unit but it seems that they just chose super cheap fans for this $60 product. The fans make an annoying high pitch whine and could not dry my Polymaker PLA filament under 38% (started at 43%) humidity even after 16 hours of continuous drying. There's a community mod with ducts and a Noctua fan replacements but the Noctua fans on their own would cost $30, which is really hard to justify after spending $60 on the base already. Considering the internals are just the fans and heating element + a small control board, I would expect there to be plenty of budget left for decent fans (even the Noctuas!) but it seems that they chose to pocket your money instead and give you a garbage product. I used to have a perception that Polymaker sells products they would be proud of but unfortunately I am now disappointed in them.

You do need to already have the accompanying dryer but if you already do you can use these for storage

Bonjour, J’ai commander 4 Polymaker Polydryer Box, en occasions et donc à prix réduit. Je reviendrais encore sur les occasions, c'était la première fois. Franchement tout est irréprochable, ils sont tout simplement neuf.

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.

These dry boxes and drier work great. They keep my PLA filament down to 10% humidity. The fact that I can use the storage box to hold my smaller spools that don't fit well in my AMS is great. I can hook the box directly to my printer and feed the filament from it. I had one warped box, but Polymaker customer service was quick and great. They provided me with a new box and also gave me printing tips for new material. Highly recommend Polymaker .

Great for storing and feeding TPU.