From fidget spinners to key holders, spiral vases to a Marvel Ironman mask, finding cool things to 3D print is easy and readily available on the web. It may be too easy. While this column usually ...

So, you got a 3D printer for the holidays, and you’re excited to dive in. Chances are, you’re not sure where to begin. What can you print? What’s fun? What’s useful? Justifying the purchase of a 3D ...