Proper material storage is key to good print results. An improperly stored material may become brittle, snap easier, and change colors.
Optimal storage conditions
To keep your filaments in prime condition store them:
- in a re-sealable bag
- out of direct sunlight
- in a dry and cool location
The optimal storage temperature for PLA, CPE, CPE+, PC, Nylon, PP, and TPU 95A is between -20 °C to +30 °C. Store ABS between 15 °C and 25 °C and PVA between 0 °C and 30 °C. Furthermore a relative humidity of below 50% is recommended for PVA, Nylon and TPU 95A. If these materials are exposed to a higher humidity the quality of the material can be affected.
Store filament in a re-sealable bag with the silica gel desiccant provided. Store PVA immediately after use to minimize moisture uptake.
Identifying poorly stored filament
Incorrectly stored materials collect dust and absorb moisture. This leads to extrusion problems and loss of print quality. In addition, moisture absorption can cause popping sounds while printing.
PVA and Nylon are particularly sensitive to moisture and suffer damage faster than other materials. Transparent Nylon will look more milky and black Nylon will be less shiny.
PVA exposed to moisture will become soft and pliable and maybe even sticky. PVA that is too dry it may become rigid, which could also cause problems while printing.
To check the quality of PLA, try to snap the filament. If the PLA filament snaps easily, it is too brittle for use and should be replaced.