FDM printers use filaments to create 3D objects. There are different types of filaments available, each with its own unique set of properties. PLA filaments are made from biodegradable materials and are ideal for printing objects that will not be subject to high temperatures or stress. ABS filaments are stronger and more durable than PLA filaments, making them ideal for printing objects that will be subject to high temperatures or stress. PVA filaments are water-soluble and can be used to create support structures that can be easily removed after printing. NYLON filaments are strong and durable, making them ideal for printing objects that will be subject to high stress or wear and tear. METAL filaments are made from metals such as brass, bronze, or copper and can be used to create objects with a metallic finish. WOOD filaments are made from wood fiber and can be used to create objects with a wood grain finish.