Activated Alumina Desiccant Beads for 3D Printer Filament Reusable (2lb) | Rechargeable Reusable Desiccant Packs, Filament Storage & Dry Box Drying Beads, Silica Gel Moisture Absorber, Made in USA

This stuff is amazing. Absorbs way more moisture than silica. Keeps my filament down around 18%

I’ve been very impressed with the Slice Engineering 2lb Activated Alumina Desiccant. It arrived quickly and the container makes it easy to pour and refill smaller holders without making a mess. Compared to orange indicating silica gel, this absorbs more moisture and seems to last longer before needing to be recharged. The tradeoff is that it does not change color, so you will want to monitor humidity levels with a hygrometer rather than relying on visual indication. I use this in 3D printed spool desiccant containers and in my AMS desiccant holders, and it has worked extremely well. Humidity stays low and filament performance has been consistent. To recharge, I dry it in my AMS HT using a high temperature safe container at full temperature for a couple of hours, and it is ready to go again. If you want a higher capacity desiccant solution for filament storage, this is a great option and I would definitely recommend it.

I have been avoiding reviewing things on this platform, but this dessicant is top-notch. I use just a few cubic inches in each of my 4 liter dryboxes, and they keep the humidity down very well. The first picture is what I generally see. The second picture shows ambient plus the effect of this stuff after maybe two hours.

I switched to activated alumina for my 3d printing needs and don’t regret it. Sure it’s more expensive than silica per pound, but this stuff works really well, and I find it keeps moisture levels lower for a lot longer than silica did. There’s no color change to indicate it’s time to dry it out, but I’m running a hydrometer for that. I don’t have to worry about the toxicity of the chemical makeup when cooking off the moisture to recharge like I did with silica. I ended up buying a second 2lb bottle, as one contained a little more than what fills up all the dry pods in my BambuLab AMS + 4x reel pods. So now I can dry/recharge a batch ahead of time and swap it out quickly to minimize the time it’s exposed to the open air.

This is better than the silica beads and works better. Only flaw, there's no color change when they need to be recharged.

This drying agent works well in my AMS2. The four stars are because even with the bottle included, the whole thing weighs less than two pounds. Mine only had one pound thirteen ounces of product. Although I should have returned it for false weight on the outside, I kept it. Also, the lid was loose when it arrived. The bottle was full, so it wasn't due to lost product.

This is insanely powerful drying desiccant. I use it in the storage bins that hold my opened 3d printer filament. When it's fully charged, I have measured the humidity to be less than 1%. After a few months of opening and closing the bins in the humid south, my humidity sensors will let me know when I should "recharge" the desiccant in an oven at a sufficient temperature and time to remove all of the collected moisture. I really like this desiccant since it's non-toxic, so it doesn't cause issues with pets or little children. This is very durable and are hard to crush. They don't turn colors like other desiccants (which is often toxic), so a sensor is recommended to know when the humidity is starting to rise. It's very easy to use... just put 1/4cup in the bottom of a small bin or put in a breathable pouch or container. Best value for protecting my 3d filaments.

More expensive than silica beads but much better at reaching lower humidity levels and maintaining them in a well closed container. Recharge requires higher temperatures than silica beads. Product is not impregnated with humidity sensing colorant so you will have to place a hyrgrometer in the container with it. Can be recharge 100s of times if you stay within the specs for recharge.

Utiliser pour maintenir le pourcentage d'humidité bas dans les boites de rangement de filament 3D.

フィラメント保管用のボックスで使用しています。 こちらの商品は通常のシリカゲルより密閉容器内の吸湿性能が優れています。 シリカゲルだと湿度20%前後だったところ、これに切り替えたところ1時間程度で15%に一晩経つと10%前後まで下がっていました。 価格は高いですが価値ある商品です。