I have found my PCNC very useful in my small one man shop for doing one or two off special parts, light faceing jobs, multiple hole, and pattern drilling jobs. This mill is not light duty, the only thing light duty might be the tool holding set up (R8), you would not want to put a 4" shell mill in this and expect good results. I would say this machine does exactly what it was designed to do. (Afordable, small production runs, prototype work, etc.) I have had mine running 8 hours a day for the last week not one problem.