Filament Drying Desiccant (2 Pack) by Slice Engineering | 10X More Powerful Than Silica Gel | Infinitely Rechargeable | Prevent Wet Filament | Fits Perfectly Inside Spools | Made in The USA

This is the most efficient dissicant I ever used. Works super fast and dries up to 20%

I've been using these for a while now in my Bambu AMS. They keep the humidity below 10%. I recharge them every time I replace a spool. I recharge them in my air fryer at 400F for 2 hours. I verified that they were recharging by weighing the canisters before and after recharging. BUT - be sure you read the directions and remove the plastic cap by turning it CLOCKWISE - otherwise you'll never get all the little desiccant balls up off your floor!

The stuff is working very very well. I added some cartridges to the AMS above my printer and filled them with this descant. I watched as the humidity dropped from the 40% to 50% range down to 10%. I’m very happy with this. I read somewhere that this type of desiccant was safer to have around than the regular color changing stuff. I don’t know if that’s true or propaganda. You know how “big dessicant” can be.

Fits well in my filament rolls, dries my ams quickly and was well priced for how well it works.

Overall these are very nice and I'd probably buy more if they cost less. These have a plastic cap that can be used to seal off the desiccant from the air when not in use. On one of the cans, I struggled to remove this. I ended up having to cut it off - that was a pain. These plastic lids are a good idea, but they should be a little easier to take off. Also, 5 of the cans were filled to the very top, but the sixth can was only about 90% full. I did not see any fines or powder that could otherwise contaminate the filament. These desiccant cans have been placed into separate plastic boxes with dried 3D print filament which also include digital humidity sensors. The humidity has dropped from about 35 to 20% in each box within about two days of being closed (I think 20% is the lowest my "cheap" humidity sensors will report). The all metal design is nice because these can be placed into an oven and regenerated without having to empty and then refill the container with dried desiccant. Nonetheless, I'll probably 3D print my own plastic containers, purchase 2 lbs of desiccant and fill them myself next time to save some $.

These work as intended but two days later I found some that I was able to print that work just as well.

The idea is a good one. But there is no way to know when the desiccant needs regeneration and it when it does, it will be a pain. The cannister is a bit thin and its threaded top fits poorly. The desiccant media/balls inside need to be removed when regenerating them. The balls are a pain to remove and put back into the cannister. A very pricey experiment on my part. You will need to print adapters to fit these in the center of a filament roll. There are no standards on the dimensions of filament rolls.

Works great. Humidity less than 10% in my Bambu Lab P1S AMS using desiccant holders. I just wish it was easier to handle!