Polylactic acid based filament for Fused Filament Fabrication. PLA is one of the most used materials for 3D printing. Ultrafuse PLA is available in a wide range of colors. The glossy feel often attracts those who print display models or items for household use. Many appreciate the plant-based origin of this material. When properly cooled, PLA has a high maximum printing speed and sharp printed corners. Combining this with low warping of the print makes it a popular plastic for home printers, hobbyists, prototyping and schools.