ABS is the plastic of choice for 3D Printers, as the printed parts are tough & durable. The parts are built tough & can be used as usable, functional end-use parts & is the same plastic as Lego. Removal of support material is easy & safe. No dangerous chemicals are required, just simply break away the support that is printed in the same material but in a lower density. Properties of ABS plastic: High strength, impact resistance, toughness, heat resistance, good electrical insulator, moisture resistant, high strength to weight ratio.