I made some mistakes learning how to use the $300 Elegoo Centauri Carbon 3D printer, but it didn't take me long to make my first part.

But it's not Star Trek replicator magic. 3D printing is based on actual science, and The Engineering Guy gives a clear, step-by-step lesson in how at least one version of that science works.

USAISR is investigating 3D printing as a way for medical professionals to provide dental care in a deployed setting.

Archinaut is a first step on that path. Made in Space is building Archinaut's 3D printer, which it plans to mate with a manipulator arm built by Oceaneering Space Systems.

She says the ink is FDA-approved. Choi created her own mini home 3D printer, Mink, that will retail for $300 and allow anyone to print makeup by ripping the color code off color photos on the ...