Tamara Brooks came to model railroading through the back door-she bought a 3D printer to prototype parts for her engineering work at an automotive supplier, and somewhere along the way she started printing freight car details for fun. Now she runs an N scale layout modeling modern intermodal operations in the Detroit area, and she's become something of an evangelist for what 3D printing can do for modelers who are tired of waiting for manufacturers to make what they need. Her writing tends toward the practical and slightly impatient-she'd rather show you how to design your own parts than argue about whether digital fabrication is really modeling. She lives in Ypsilanti with two extremely unimpressed cats.