Solution for printing with water soluble PVA in Dualstrusion
by robosavvy, published
How to use PVA without it absorbing ambient moisture.
The filament is to be contained in a airtight connector that only exposes the filament to ambient moisture for a few seconds before it is extruded.
More information at: http://robosavvy.com/forum/viewtopic.php?p=37534#37534