If you think 3D printing is far from mainstream, you may want to check out a number of companies from Cubify to Makerbot who are making affordable hardware and plug-in-play modeling programs that accelerate adoption. This growth stands to shape the ad space as well as brands will enable physical creations from reskinning Star Trek characters to printing branded phone covers. But as Fast Company points out, this will force advertisers to re-evaluate their output as 3D printed objects are a bit more…tangible. Done correctly however, it could create as great an impact as the rise of user-generated content, perhaps greater.