... stone sharpeners, diamond electroplated cutting discs, diamond grinding discs, diamond resin grinding wheels, etc. 2. Workshop 2: tungsten ... construction tools and machines, includingdiamond cutting blades,diamond grinding wheels,diamond profile wheelsdiamond vacuum brazed toolstile bits, ... industrial tools, like dies, taps, hss or carbide end mills, counter sinks, step drills, cobalt drills, hobs, ...