If we told you somebody built a 3D printed go-kart, you’d expect to see a certain sequence of events. A bit of work in CAD, a printer montage, then some assembly. That’s not the case here.

3Doodler, known for its 3D-printing pens ... so it’s safe for kids aged six and up to use. 1/2 Designed for kids aged six and up, the 3Doodler Candy pen has a 45-minute rechargeable battery.