The AS1 is no filament dryer. It will dry material only over a very long time of several days. The AS1 is intended to use as storage and feeding device for predried or freshly opened filaments. Please note that all our materials will ship in aluminum bags with a lot of dessiccant. You can put this material in the AS1 WITHOUT predrying. If you receive any material in transparent plastic bags with only a small sachet of desiccant, we recommend to predry it before printing or putting it in the AS1.