The value of an ATMOStag_TILE is based on the object’s presentation: Each 3D printed ATMOStag_TILE is accompanied by a hand-made silicon sheath. The sheath fills out the TILE, forming a rectangular cuboid that’s easier to ship. After pealing it away to reveal the TILE’s surface, we see that the sheath forms its double and negative. The TILE is the sheath’s mould, and its interior is both the double and negative of its complex geometry. It can be used to hold hold the TILE like a precious artefact. It is also a demonstration of 3D printing’s the multiple use cases, as both object and scaffolding, support and content, structure and envelope.