PVA (Polyvinyl Alcohol) is a water-soluble support material primarily used in dual-extrusion setups. It dissolves completely in water, leaving clean surfaces on complex prints that require extensive support structures.
Properties
- Water Solubility — Dissolves completely in warm water for easy support removal
- Compatibility — Works well as support material for PLA and nylon
- Surface Finish — Enables clean overhangs and complex geometries
- Moisture Sensitivity — Extremely hygroscopic; absorbs moisture very quickly
- Strength — Not intended for structural use; serves as support material only
Best Practices
- Store in an airtight container with desiccant at all times
- Print from a dry box if possible, as moisture ruins print quality within hours
- Dissolve supports in warm water (40-60°C) for faster removal
- Use with PLA for best compatibility in dual-extrusion setups
- Purge the nozzle thoroughly when switching between PVA and other materials