question 27: cnc tool life and machining costs (5 pts) the operator of a cnc machine gets paid . it takes him to load and unload a part (i.e. handling time), and to change the cutting tool (which has taylor coefficients of and. when he runs the spindle at it finishes a part in . his cutting tool costs him each and he is able to machine before having to replace the tool. he wants to know if he can save money by running the spindle at . what is the cost per part at and at ?