@pubity: Zac Waters, 13, from Lehi, Utah, spent roughly 300 hours over the summer designing and 3D printing a custom wheelchair for a 21-month-old girl he has never met. Built through the nonprofit MakeGood, the chair features pink accents, a removable cupholder and tray table, and adjustable straps and headrest so the girl can use it as she grows. When asked why he did it, Zac said: "It combines my two favorite things in life: 3D printing and helping people in need." #Pubity #RoadTo19M