The problem with that is that you need to lay down a conductive lacquer before the copper will deposit. That's the "silver ink" he talks about. Laying that down would require another sort of printhead, that doesn't depend on a conductive surface to deposit its contents. It's probably not that hard to do, but it's more complicated than simply laying down copper traces on a blank board. And then you'd need a drilling head to follow all that, so you'd have places to put your electronic components.

Andrew Werby
www.computersculpture.com