Meet Zac Waters, the 13-year-old Utah boy who spent 300 hours 3D-printing a wheelchair for a 21-month-old girl
Zac’s summer project was a custom wheelchair designed for a 21-month-old girl. (News 4 Utah- screengrab) While many children his age were on summer break, 13-year-old Zac Waters spent about 300 hours working on a very different project. The Lehi, Utah, boy used his 3D printing skills to build a custom mobility chair for a…