Custom-designed workpiece holders make a significant contribution to the perfect processing results obtained by the DF-Series. They also ensure that the workpieces are mounted as quickly and efficiently as possible and considerably simplify batch processing. In recent years, OTEC has designed over 100 different types of holder. Furthermore, the process container features a water cooling system which keeps the polishing granulate at a constantly low temperature. This considerably extends the life of the process medium and ensures constant process quality, even at consistently high processing speeds.