Clinton Freeman, a senior software engineer in Australia and a 3D printing aficionado, has studied ways to make sure 3D printing filament stays in tip-top condition. Freeman says scientists who tested the strength of prints which resulted from filament exposed to various levels of moisture found that some PLA prints were up to 33% weaker in tensile strength than their properly stored counterparts. You can read the whole story here: http://3dprint.com/49058/filament-moisture-damage/


Below is a photo of objects 3D printed with nylon filament affected by various levels of moisture: