Profile: BK Grinding is involved in material grinding business. Our grinding service includes blanchard grinding, mattison grinding and centerless grinding. Our machining activities on a blanchard grinder includes stock removal on hard materials, chopping blade sets held to the same size, weldments and bolster plates for press dies. Mattison grinding is used at the beginning of a machining operation to ensure that the part will run through a milling operation with the least amount of variation.