AB-tuff high grade rapid prototyping resin providing the structural representation of ABS plastic. AB-flexfeatures flexibility characteristics. EnvisionTEC’s AB-tuff & AB-flex 3D Printer Materials are the closest prototype resins to production grade ABS Plastic. Finally, rapid prototyping/3D printing has a true production representation of ABS with the launch of the AB materials from EnvisionTEC. Combining AB Materials with patented DLP technology exclusively from EnvisionTEC gives you the absolute closest 3D representation available in the industry.