Hello just wondering of anyone has used the Rosahl dehumidifiers before? can anyone tell me how well they work and are they worth it? just trying to find a better solution than using loads silica desiccant packs. TIA

thanks for the help looks like they will be very useful in the long run and ill be saving myself a few quid!

Thanks again for the help, I ended up getting a RS2 and have done what you have done with a 3L cereal box and its working very well! I might have to get the next size up in the future if I start expanding my printing.

Credit to @ERIK3D for that! :smiling_face:

Maker Forums

Filament Drying

3D Printing

mcdanlj (Michael K Johnson) June 3, 2025, 11:51am 2

US Source for Rosahl electronic dehumidifiers? 3D Printing

I made a cereal storage box based filament drybox with the smaller RS1 membrane from Rosahl. Works pretty well for keeping new (fresh unpacked) spools or pre-dried spools (lying around for days/weeks before) at 15% rel. humidity (compared to 60% outside in my region). And consumes just 0.2W power at that level constantly. Made a bunch of 3D printed parts for it and it’s powered from USB. See on Printable.com if interested: Printables I also grabbed a larger M-3M1R membrane which currently keeps…

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