Resin bond diamond rbd or russian black A diamond represents a type of bond employed within the creation of of diamond abrasives. In rbd, Diamond particles are bonded together using a resin matrix identified as usually made of synthetic elements such as phenolic resins, Polyimides, Or polyamide, Imides. Resin bond diamond powder has a polycrystalline is formed, Diamond grain from sub, Crystals with mosaic structure that provides irregular shape & rough surface to keep consistency of selfsharpening and cutting edges, Its primary application is in resin bond diamond lapping pads, Grinding wheels and polishing pads. The resin bond provides a standardized and stable structure that holds the diamond allowing for, Particles together consistent and controlled cutting performance during the grinding and polishing process. Usage tungsten carbide cutting and milling tools, Dies, Ceramic porcelain, Silicon carbide, Glass. Size 60/70, 500/600grades ms, Ps & micron.