reading through this ol' spell again, I though of something. It uses material component: target of transmutation.
....
....
so a SLA of fabricate can create ANYTHING that isn't a creature of magic item, up to 10 cubic feet per level! ok, only 1 cubic foot per CL if you use a mineral, but, after all, black lotus extract is vegetable matter... but adamantine is, so you can only make 1 cubic foot per caster level of adamatine per casting. In whatever shape you want it to be, of course.
as for being able to use this trick, the following ideas come to mind:
phaerimm
dweomerkeeper (Su) spell
spellstiching
ignore material components (epic feat)
either way, doesn't this once again completely b0rk, well, everything?