Our slow-moving queue curves around a two-story wooden boathouse filled with props from explorations through distant lands. At the front of the line, a Disney cast member dressed in khaki helps us step onto a quaint little boat for a tour around the jungle. This is Disneyland’s world-famous Jungle Cruise, filled with animatronic animals and painful puns from your skipper, and old-world set pieces depicting scenes straight out of the Amazon, Congo, Mekong and Nile rivers. It’s a ride that Walt Disney himself had a hand in developing, but something new is coming that separates it from its 1950s origins: a 3D-printed prop. You may have seen small-scale 3D printing being done by hobbyists at home. But that’s child’s play compared to what industrial-scale 3D-printing workshops can do.  Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source. Haddy, a 3D-printing business based in Florida, says it can build worlds. More specifically, Jay Rogers, co-founder and CEO, tells me the company is installing its first boat in a Disney park. …