High Impact Polystyrene (HIPS) is a popular filament in 3D printing known for its versatility and ease of use. Often used as a support material for complex prints, HIPS dissolves in d-limonene, making it compatible with dual-extrusion 3D printers. Its low cost, smooth surface finish, and ability to create intricate support structures make HIPS a practical choice for 3D printing projects. Additionally, its properties, such as impact resistance and dimensional stability, make it suitable for producing lightweight and durable prototypes.