ABS, short for acrylonitrile butadiene styrene, is a common thermoplastic that is petroleum-based. Used to make LEGO™ bricks, its strength, flexibility, and higher temperature resistance make ABS an often-preferred plastic for engineers and other professional applications. It is typically stronger and more durable than PLA filament but is not biodegradable. In general, parts printed using ABS have a “bend” to them and are less brittle than PLA. It also has a lower coefficient of friction than PLA and requires slightly less force to be extruded. ABS is available in both 1.75mm and 3mm.