The High Energy Ball Mill E max and MM 500 were developed for grinding with the highest energy input The innovative design of both the mills and the grinding jars allows for continuous grinding down to the nano range in the shortest amount of time with only minor warming effects These ball mills are also suitable for mechano chemistry Wiki says quot A ball mill is a type of grinder used to grind materials into extremely fine powder for use in paints pyrotechnics and ceramics quot Many instructables refer to United Nuclear Ball Mills Their small ball mill cost between 70 and 80 dollars For no more than 30 and in 5 minute you can build a ball mill of appreciable performance