High impact Polystyrene based filament for Fused Filament Fabrication. Ultrafuse HiPS is a high-quality engineering thermoplastic, which is well known in the 3D-printing industry as a support material for ABS. But this material has additional properties to offer like good impact resistance, good dimensional stability, and easy post-processing. HiPS is a great material to use as a support for ABS because there is a good compatibility between the two materials, and HiPS is an easy breakaway support. Now you have the opportunity to create ABS models with complex geometry. Our HiPS is easy to post process with glue or with sanding paper.