It's an interesting approach. As a nerd my initial reaction to revolt at the idea of DRM'ed 3D printing. That said, I get it and it's a novel approach. As so

It's an interesting approach. As a nerd my initial reaction to revolt at the idea of DRM'ed 3D printing. That said, I get it and it's a novel approach. As someone else in the comments pointed out it's also probably really easy to get around with open hardware / open source 3D printers. But maybe that's a problem you want to have at this point in the game? Kudos on the launch