Additive manufacturing, also known as 3D printing, is a rapidly evolving technology with applications in many different industries. The market for 3D printing material, filament, is expected to grow to $4.4 billion by 2023. This undergraduate research project explores the development of new biobased 3D printing filaments composed of Dried Distillers Grains with Solubles (DDGS), polylactic acid (PLA), and plasticizers. Formulations of these materials were extruded with a twin-screw extruder into filament. The filament was then 3D printed into parts and test specimens for property categorization. Successfully developing a DDGSPLA filament could generate $325 million in revenue for North Dakota.