What is HIPS?
HIPS stands for high impact polystyrene. HIPS is perfectly suited for supporting ABS because the two materials share much of the same printing properties. HIPS dissolves in D-limonene, so the support material can be easily removed from the model.
HIPS is a soluble material that can be dissolved in D-limonene, however D-limonene may cause some discoloration of the ABS material. Therefore, it is only recommended for complex models for which discoloration does not form an issue.
HIPS is a dissolvable material that is resistant to water, heat, and impacts. It is fairly inexpensive but dimensionally accurate, making it an ideal support material.
HIPS is most often used as a soluble support material for complex ABS prints, as they both share many of their printing and handling properties and can be easily combined in layers.