Some architects dream of 3D-printing houses. Some even fantasise about SD-printing entire cities. But what is the real potential of 3D printing for architects? This issue focuses on another strand of 3D-prindng practice emerging among architects operating at a much smaller scale that is potentially more significant. Several architects have been working with the fashion industry to produce some exquisitely designed SD-printed wearables. Other architects have been 3D-printing food, jewellery and other items at the scale of the human body. But what is the significance of this work? And how do these 3D-printed body-scale items relate to the discipline of architecture? Are they merely a 'distraction from the real business of the architect? Or do they point towards a new form of proto-architecture-like furniture, espresso makers and pavilions before them - that tests out architectural ideas and explores tectonic properties at a smaller scale? Or does this work constitute an entirely new arena of design? In other words, is 3D printing at the human scale to be seen as a new genre of 'body architecture'? This issue contains some of the most exciting work in this field today, and seeks to chart and analyse its significance.