How much is a fair amount to charge a customer for 4 axis machining of aluminum parts. The cycle time is 5 minutes per part and they are made of 6061 aluminum. The parts are ordered in batches of 1000 to 2500 pieces. Material is supplied for the job. We currently do 3-axis work for customers in several different materials from tool steels to plastic but never any 4-axis yet. Any help in this would be greatly apreciated.