On the Cover

From left to right: The Afinia H-Series (Microboards Technology), Printrbot LC (Printrbot), and Cube (3D Systems). 8D Cubic Lattice designed by Chris K. Palmer and printed by the Type A Series 1 (Type A Machines), Herringbone Geared Extruder designed by Rhys Jones and printed by the Replicator 2 (MakerBot Industries), and the duck printed by the 3DTouch (3D Systems).