[Jared Holladay] is a computer engineering student at the University of Cincinnati and a life-long roller coaster fanatic ... plastic and moving into 3D printed parts with needle-fine tolerances.

[Jon Mendenhall] fixed this deficiency by designing a model roller coaster that accurately simulates a full-sized ride. The track and cart are all made of 3D printed pieces, which altogether took ...

A thrill ride manufacturer that has designed a 1,000-foot-tall roller coaster that would shatter all height and speed records ...