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 21-month-old girl.

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…

In an inspiring summer project, Utah teen Zac Waters devoted roughly 300 hours to build a custom mobility chair for a young child. His journey began with a passion for 3D…