Explanation: Most filaments absorb moisture from the air readily. When moisture content goes up in a filament, the printability goes down and may lead to the filament becoming un-printable. The PrintDry filament dryer is an in-line filament dryer, which is designed to dry and to feed the filament into a 3D printer at the same time. The PrintDry unit can set up its temperature from 35-70C or 95-160F in order to dry different types of filaments, such as PLA, ABS, PETG, ASA, PP, PE, Nylon, PC, PET and TPU/TPE. It works with both 1.75 and 3 mm filaments. The PrintDry filament dryer is ETL certified for electric device safety.