3D Printer PLA moisture problems and storage solutions

Not long after getting into 3D printing, you start hearing about all the different ways people store PLA (Polylactic acid). The Internet is scattered with systems ranging from the very simple to elaborate PLA humidors. Often accompanied by scant details, but ominous warnings ‘PLA absorbs moisture from the air’.

This is a companion discussion topic for the original entry at https://reprage.com/post/3D-Printer-PLA-moisture-problems-and-storage-solutions