To update the class...his plan was to machine aluminum engine cylinder blocks. The problem with machining anything is repeatability. If you have to remove the part and do some machining on the part in another CNC, then put the part back in the original machine to finish it, getting it set-up in that machine in exactly same spot is about impossible. A 3 axis can do 3 things without changing the parts position/set-up. They created a 5 axis machine. It doesn't work.
Now he seems to feel he's stuck with THIS machine, so has a guy familiar with Haas machines that will do 3 axis, then remove block and do X work to finish it. Tom doesn't have the technical skills to do it. That's the whole purpose of this machine. Put chunk of aluminum in, push button & X hours latter remove essentially finished part.