Over the last year, it seems the next big thing in 3D printing is dual and multi-extrusion. This gets you multi-colored objects, but if you have the right filament, it also allows you to print objects that would otherwise be impossible to print. This week, Airwolf 3D announced their HydroFill water soluble support material. They had a few sample prints and a fish tank, and yes this stuff does dissolve in water quickly.
There were a few problems with dissolvable support material in the past. PVA is water soluble, but it doesn’t print well. HIPS can be dissolved in limonene, but the resulting goo is toxic. Airwolf’s HydroFill beats both of these filaments, and the prints compare well to what E3D showed off with their Scaffold filament recently.
Check out my video below where [Jack Licorish] goes over the characteristics of HydroFill.