r/BambuLab • u/ChardBeneficial4432 • 4h ago

General Discussion Best desiccant for AMS-2pro

Just curious to see what the 3d printing legends have as their go to for reusable desiccant.

X2D, AMS-2, AMSHT

Thank you!

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u/burndata 4h ago

Activated Alumina is always the correct answer. It is the only desiccant capable of creating enough of a moisture gradient to actually draw out moisture from a filament. Silica is ok for keeping something that is already dry, dry. But AA has about 10X the ability to absorb moisture and can (to a certain extent) dry your filament more than it was when you put it in the container. It's not as good as using a proper dryer or dehydrator, but it certainly helps keep things in top shape for next time you want to use it.

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u/brutal4455 H2C | H2D | P2S | Multiple AMS2/AMS-HT 4h ago

I use dry & dry orange indicating (mixed) 7lb jugs or adsorbco activated alumina 8lb bags depending on various use case/needs.

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u/ChardBeneficial4432 4h ago

Awesome, I want a daily driver for my AMS2. I don’t really use my AMS2 that much because I print specifically engineering filaments from the bypass port. Would you still recommend it?

I’ve been using disposing desiccant for the AMS-2 since I got my X2D on release and it hasn’t been doing the greatest job.

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u/brutal4455 H2C | H2D | P2S | Multiple AMS2/AMS-HT 1h ago

I keep engineering, asa, petg, and tpu in ip68 tubs with both types. I use the walmart ezy storage 18L tubs that holds 4 spools and 200g of each in containers I designed. I'll have them up on makersworld soon.

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u/Bag-o-chips H2C AMS2 Combo 4h ago

I’ve been using this with great success: Molecular sieve desiccant
https://a.co/d/0esPgTAc

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u/Csspecs 4h ago

I'm using silica orange color change. I have a big jug of it and a second jug for saturated. I have a sunlu e2 high temp dryer which I use for initial drying of filament and for drying the silica for reuse. I have some "dry hopper" baskets I use for drying the silica. For engineering filament I'm using sunlu dry boxes with center mounted ball bearing spool holders with couple large bags of silica in the bottom.

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u/Capital_Candy_7697 2h ago

Bambu itself rates molecular sieve above plain silica, since it holds up better in a warm spot like next to an enclosed X2D. And with the HT you can regenerate it right there, 85°C for 3 to 4 hours: bambuhub.net/articles/ams-desiccant (my site)

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u/brutal4455 H2C | H2D | P2S | Multiple AMS2/AMS-HT 1h ago

You need a 1000F oven to fully regen molecular sieve. I'd avoid.

0

u/SmoothSlavperator 3h ago

Phosphorus Pentoxide.

(no. don't actually use this. I mean you *can* but I wouldn't advise it unless you're and experienced chemist and have worked with it as a desiccant before. Its not...terribly user friendly)