put-tool-mm milling-mach1 spot-drill1 put-holding-device-mm milling-mach1 visel clean part5 put-on-machine-table milling-mach1 part5 hold milling-machi visel part5 sidel side3-side6 drill-with-spot-drill-mm milling-mach1 spot-drilll visel part5 hole1 sidel side3-side6 remove-tool milling-mach1 spot-drill1 put-tool-mm milling-mach1 plain-mill1 face-mill milling-mach1 part5 plain-mill1 visel sidel side3-side6 height 2 cost =15 (b)