## Recharging Silica Beads with SUNLU Dryer [Reddit Post](https://www.reddit.com/r/3Dprinting/comments/1h47c49/recharge_silica_gel_desiccant_beads_with_the/) This just a results report to the community of the process that worked for me; mostly because I didn't see anyone report their results...just that it could be done; and a lot of explanations of why it might not work. **Summary** I recharged 1 Quart (2 lbs) of [Silica Gel Desiccant Beads](https://www.amazon.com/gp/product/B01I5Y2DG6) inside their printed ABS containers organized in the [SUNLU FilaDryer S4](https://www.sunlu.com/products/sunlu-filadryer-s4) using the **PC** temperature settings (70 C) set for a nine (9) hr runtime. I sifted through beads in all the containers and found only a few beads which had not completely turned to the dehydrated color (i.e. orange, in this case); but all those beads had started to mostly turn colors. I count that as a solid success. **Equipment** I have two Bambu Lab AMS units which I've printed a number of desiccant bead containers in ABS to ensure dry filament while stored in the units; including: - [AMS Desiccant Box Sets](https://makerworld.com/en/models/573428) with Hydrometer - [High Airflow Spool Desiccant Holder](https://makerworld.com/en/models/179426) for each spool used in the two AMS units - [AMS Desiccant Trays](https://makerworld.com/en/models/23215) - [Desiccant Dryer Ferris Wheel](https://makerworld.com/en/models/73654) In all, these containers held the full complement of the 1 Q of Silica Gel beads I purchased. I bought the Sunlu S4 during the Prime Day sales -- knowing that I really needed to recharge the beads soonish -- and of course to dry filament spools. Mostly, I was turned off with the microwave- and oven-approaches to the recharge process and had read that using a filament dyer would work. The Sunlu seamed attractive because it circulates that air flow inside. **Process** The highest default temperature setting that the [SUNLU FilaDryer S4](https://www.sunlu.com/products/sunlu-filadryer-s4) had was for **PC** filament at 70 C (158 F) -- it may be possible to set it higher manually (i don't really know). The Silica Bead packaging indicates that an oven should be set to 200 F - 250 F to rehydrate -- but I didn't want to break my dryer just yet. I chose the nine (9) hr runtime arbitrarily (set it manually over the 6 hr default setting) -- mostly because I was going to bed...and I find its a bad example for the kids to wake up and run immediately to the 3D printer to see how my prints went (because Christmas, you know). So, take an hour to wake up, eat breakfast, and have a coffee...then run to see how it went!