HIPS is a lightweight material most commonly used as a dissolvable support structure for ABS models. HIPS, or High Impact Polystyrene, is a dissolvable support material that is commonly used with ABS. When being used as a support material, HIPS can be dissolved in d-Limonene, leaving your print free of any markings caused by support removal. HIPS has many of the same printing properties as ABS, making it a logical dual extrusion partner. Not only is HIPS great for supporting your ABS prints, its also more dimensionally stable and slightly lighter than ABS, making it a great choice for parts that would end up getting worn out or used in applications that can benefit from the lighter weight.