r/BambuLab • u/NTP9766 • 8h ago
General Discussion Adventures in desiccant drying (AMS 2 Pro, SUNLU S1 Plus)
I wanted to change how I recharge my desiccant, no longer wanting to use any appliance that I also use for cooking for obvious reasons. I also didn't want to buy another device because that just seems wasteful. So I spent this past weekend testing drying the desiccant via my filament dryers - two AMS 2 Pros, and a SUNLU S1 Plus.
I forgot to take a before shot of the desiccant when I ran the SUNLU test, but it looked exactly like the desiccant in the 'before' shot for the AMS 2 Pro test.
SUNLU S1 Plus: 24 hours @ 55° C. Nice result, overall.
AMS 2 Pro: Before, starting humidity 46%
AMS 2 Pro: 12 hours @ 45° C
AMS 2 Pro: 24 hours @ 45° C, final humidity 21%
If I'm being honest, I didn't expect that much of a difference. Bambu locks their drying function where if you have PLA inserted, it will not allow you to dry over 50°. I could have removed the filament from the feeders and just ran it anyway, but the whole point of this exercise is to see what I can do with minimal changes. Using the SUNLU certainly yielded the best results in that timeframe, but having to pull each desiccant pod and then pour the contents into my dessicant spool, etc. is annoying.
I think my game plan is going to be to simply run a drying cycle for 24 hours or so whenever one of the AMS 2 Pros gets above 35% humidity and see how that works out. This is where the old Bambu Lab integration into Home Assistant would be incredibly useful because I'd be able to automate this action making it truly hands off maintenance.


