Method of making a three dimensional object

A method for forming a three dimensional object, said method comprising the acts of

• generating a digital representation of the object including a representation of a surface of the object;
• generating a digital representation of a build style lattice having a substantially uniform, conformal tetrahedron structure, the lattice including a plurality of substantially uniform conformal tetrahedrons, each tetrahedron including four legs extending from a node, the legs having a uniform length and thickness, the legs extending from the node to define therebetween substantially equal included angles;
• overlaying the respective representations of the object and the build style;
• intersecting the overlaid representations to generate a digital representation of the object incorporating the build style;
• and
• fabricating the object incorporating the build style from the digital representation to form a boundary skin and a lattice integrally formed with and extending from the skin.