Here is a gentleman who takes great pride in hand building vacuum tubes.  Not only does he build them by hand but he uses equipment that appears to be custom made.  If you enjoy watching a craftsman at work then checkout this two part video:
PART 1:

PART 2:

After many weeks, months, or years in development, every Engineer loves to finally hold in hand his/her work.  There is no better a reward than admiring something you’ve created (at least for the Engineering / Entrepreneurial minds) even more so if it works!  I am not sure why but I also thoroughly enjoy machining parts and watching parts being machined especially when they’re designed by yours truly.
Video Notes: Here we have a part made from 6061-T6 aluminum being turned on a slant bed CNC gang lathe.  This was done by …