Polyvinyl Alcohol (PVA) filament has become an essential component in the world of 3D printing, especially for complex designs and dual-extrusion printers. Known for its water-solubility, PVA filament is widely used as a support material for overhangs, internal cavities, and intricate geometries that would be impossible to create with a single filament. This unique characteristic of dissolving in water makes it both environmentally friendly and easy to work with, offering a seamless post-processing experience. polyvinyl alcohol filament. PVA filament is a synthetic polymer made from polyvinyl alcohol, a water-soluble resin. In 3D printing, it is typically used alongside primary filaments such as PLA (Polylactic Acid), PETG, or Nylon in dual-extruder printers.