I like to machine things! I have experience operating CNC and manual mills/lathes, wire EDM, and all kinds of metalworking tools. Here are a couple of particularly interesting examples.
I built this Stirling heat engine as part of my school curriculum's Manufacturing Engineering class.
EDM-ing the spline onto the interconnecting shaft of the front axles. 6 hour cycle time!
Interconnecting shaft installed in the front corner of the 20XT. I also machined some of the other metallic components in this assembly.