Yes i saw that too....i just wished that those folks that go to all that trouble to create a mold just make one for the whole guitar not just the body.......maybe for epoxy that would not work(i know cause i kinda did it) but for concrete it would....no truss rod bull****....a solid piece of...concrete awesomeness you ll play...sitting down...
I was part of a concrete boat project a few years ago. An artist wanted to see if it was possible. I told him it was and had been done (on a much larger scale), but he made one anyway...
Not sure that I want to play a 20lb. guitar, but that thing is totally insane! One more thing I can talk about when I start a story with "I thought I had seen everything until..."