So friggin' cool man!  I still haven't finished reading the blog but I couldn't resist peeking at the spoiler.  You did a fantastic job with breaking something so large and geometrically challenging up into bite-sized chunks.  The CNC didn't hurt either.  It would be a bear to build one of these without one!  After a brief look at prices online, you might want to batch out a few more and put them on Etsy 😉