Great job!
Personally I'm not really a fan of 3D printed parts for final use (molds/casting....prototyping.. for sure!)....
I just cant ever 'see' past the print (layer) lines.
I bet if you made another one, and use some filler/putty to clean things up... you could sell a few casts from it!
* Still open to making a custom pcb for an Arc Reactor version (or versions)