Polymaker 3D Printing Filament Storage Box - PolyDryer Box for Continuous Filament Sealing and Protection, 3D Printer Filament Holder Compatible with PA Nylon, PLA, PVB, PETG, ABS, TPU 1.75mm 2.85mm

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 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!!

On the whole, the dryer module is useable to me although not as good as I expected. I purchased the dryer and box and an extra box. My purpose was to be able to dry higher temp filaments like Nylons and ASA that my little Sovol box couldn't plus provide a dry box while printing actively with my printers without having to wait for long dry cycles. The dryboxes being able to be separated from the dryers and stored separately is one of the pluses with this drying system. It does reduce the cost of storage of opened filament by only having to purchase a limited number of dryers while using more dry boxes. For PLA and PETG and TPU filaments it dries well. For materials like ASA, ABS or Nylon, not so well. After test drying Polymaker's own PA6-GF25 filament I'm not too impressed. 1st, the elephant in the room...This is an expensive way to dry and store filament. $80 for a dryer and 1st box then $30 per box after that! I'd suggest you dry each roll and either use it immediately in its box to printer or store in some air tight resealable bags with desicant. Storing one box per roll of filament can get real expensive with these. The dryer has very limited air movement into the boxes. All the pictures and implications show air movement in a vertically circular pattern inside the box. I found that it pretty much lightly flows from input directly to output ports only in the bottom. Only residual heat goes to the top of the spool and isn't circulated well at all. Moisture tends to collect in the front desicant and hydrometer and in the top lid. This gives a false impression of what the filament moisture actually is. You're really measuring the desicant moisture. Also the venting holes on the lower sides in the dryer arent venting out most of the moisture which stays trapped in the desicant or top lid. That will go back into the filament when the dryer is shut off and the box is removed from the dryer and sealed. Now that would be fine if you could quickly and slightly open the box to rotate the spool or open a vent on top. But the snap on top held by two huge clips are difficult to snap open at best. Also there is no motorized spool movement either. So the spool isn't heated or dried uniformly. Opening or closing the large top clips requires a good deal of force and makes a loud snap sound like you just shattered plastic. I get the impression that the clips (or worse yet) the box itself will eventually break after significant opening or closing. The heat inside the box generally doesn't get much above 50 degrees C even on it's highest setting. Its also very inconsistent in different areas of the box. Only after two or three hours of operation can it reach close to 60 degrees C on the highest setting near the box's heat inlet. Many advanced filament types need hours of 70 to 90 degrees C heating to dry properly. This box can still dry those filaments somewhat, but they will require many more hours of drying to do so. I did dry PLA just fine at the lowest setting over time. But PETG and TPU needed the second heat setting for a good deal longer than specified. But at about 12 to 18 hours they dry. I was unsuccessful at getting Polymaker's own PA6-GF25 or Qidi's UltraPA to dry enough. Even the highest setting of the heater for 24 hours wasnt enough. I could get them down to about 20% readings until the dryer was shut off and the bottom air ports were capped off for storage. But then the readings would slide back up to about 30% within a day when the trapped moisture in the box and the desicant went back into the filament. Also, I wasnt thrilled with the 3 levels of settings as one two or three nozzles. I want to see settings geared to temperature settings and durations not some arbitrary 123 nozzle kind of choice that I need a chart to decipher. Give us heater temp settings with durations. And the displays both in the dryer and box are terrible! Both displays are completely unviewable at any angle other than straight in front of the units. Move even a foot or two above, below, or to the left or right and you will see all 8s and all text displays shown at once. It means you spend a lot of time having to position your body down and directly in front of the displays just to read them. Poorly chosen displays! The fan noise of these is somewhat moderate. If you have it in a quiet room, sure it will be very noticable. But most of us will have these next to printers with several fans with much louder volumes than these. In summation, this dryer and dry box do work and will dry most low to moderate temp filaments within a 12 to 24 hour period. But I was disappointed in the fact it did not dry my higher temp filaments well even after 24 hours. And the moisture venting being below the dry box is not very effective at removing the moisture from the box. It needs a better top of the box vent that can be sealed off when stored. You might also find you will have an extra cycle to cook the installed desicant in an empty box to recharge it or that moisture will just return to the filament. I'll probably keep the dryer and two dryboxes but will only use them with PLA, PETG or TPU. Certainly not worth the $110+ I paid for them to be able to dry advanced filaments. I'll now have to spend more money trying another dryer system that can actually dry advanced filaments within a 24 hour or less timeframe.

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.