There’s a lot you can make with a 3D printer: prosthetics, corneas, firearms — even an Olympic-standard luge. You can even 3D-print a life-size replica of a human head — and not just for Hollywood.

There are almost limitless possibilities when it comes to 3D printing. Design your own color-changing jewelry? Fine. Fabricate your own drugs? No problem. Print an entire house in under 24 hours? Sure ...

Forbes contributors publish independent expert analyses and insights. TJ McCue is Seattle-based and covers tech & productivity tools. Investigating a murder is how startup Body Labs got its start, ...