eSUN Hard Tough Resin This is a resin with high physical strength, high hardness and high toughness similar to ABS filament. Experiments have shown that the 3D model produced by eSUN's Hard-Tough Resin product, such as the carrier gear, can withstand high impact forces and other high-strength mechanical pressures. While using electric drills to test the toughness of the resin, there's no breakage on the model even after a few drills. For the application field, the material needs to have extremely high stress and strain performance, and that's why eSUN developed Hard-Tough Resin. Hard-Tough Resin is a urethane acrylate photo curable resin suitable for LCD printers. To ensure the good quality and stability, eSUN is fully formulated with high quality imported raw materials with the following advantages: High impact strength; Higher shock resistance than normal resin; Rigid resin, excellent mechanical properties such as hardness, tensile and bending; High surface hardness and wear resistance.