Infinite Material Solutions launches microporous 3D printing material May 27, 2021 Maryam Farag Infinite Material Solutions LLC. launched Caverna PP; a 3D printing filament that allows users to create lightweight foam parts resembling a sponge. Designed for use in fused filament fabrication (FFF) systems, Caverna PP is the first in Infinite’s line of forthcoming Caverna build materials. Each one will be a blend of two polymers: a soluble material to be removed through dissolution, and an insoluble build material (in this case, polypropylene) to remain. After dissolution, the water-soluble phase leaves behind a cave-like network of microporous, interconnected channels inside the build material.