. "At TED, Tibbits showed off a collaboration with Stratasys and Autodesk to create strands made of multiple types of materials that, when dipped in water, fold themselves into pre-designed shapes. (Curious readers can view a video of what this looks like here.)The pressing question for 4D and other print sellers is this, said Margie Dana, founder of Boston-based Print Buyers International (PBI) and" . . .