ABS filament is a type of thermoplastic commonly used in 3D printing. It stands for Acrylonitrile Butadiene Styrene and is known for its strength, durability, and resistance to impact. This makes it a popular choice for creating functional parts and prototypes. One of the key features of ABS filament is its ability to withstand higher temperatures compared to other materials like PLA filament. However, it can emit fumes during printing, so proper ventilation is recommended. Additionally, ABS can be smoothed with acetone, allowing for a cleaner finish on printed objects.