[pkinsky]

They've raised 40m from Sequoia, so it's reasonable to conclude there's been some degree of vetting. Given that they show video of a working prototype it's very likely this vetting included independent observation of their printer in action. Their product might be useless for some other reason, but if so it's non-obvious enough for them to have raised a non-trivial amount of money.

[markhelo]

Clinkle did raise 25 million as well, nevertheless this looks cool and hope it is affordable.