Amazon.com: Fused Materials PVA 3D Printer Filament, 1.75mm, 1kg roll - Dissolvable Filament - Water Soluble Filament for 3D Printers and 3D Pens : Industrial & Scientific
PMMA-1004-001: PVA filament - natural - 1.75 mm - 750 g at reichelt elektronik
Adaptway PVA (water soluble) Filament, 1.75 mm, 1 kg, color less