Note that if he's willing to trust a little, Rockhounds a) does this to order as a main part of their business, and b) is clearly and openly on the OGJ side of the war. Which means that arguments about "one fan can't build something that big" are moot, because one fan won't. He'll be hiring it done. (It will, OTOH, be massively expensive...)

--
Of all the tyrannies, a tyranny exercised for the good of its victims may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end, for they do so with the approval of their own conscience.
-- C.S. Lewis