### CNC Commonly Used Calculation Formula | MachineMfg

The formula calls for 'cut volume', '# of details', Machine run rate (3″/hr.) [with a given number of 10] & a formula for machine time (cut volume x # of details / machine run rate) Once you get the machine time you can calculate the cost by multiplying it by the amount per hour charged. for example it the volume was 25 & there were 2 ...