Abstract: Various methods of additive layer manufacturing, and objects obtainable by such manufacturing, are disclosed. In particular, there is provided a method of additive layer manufacturing comprising depositing a layer of a material on a surface, and controlling the deposition to vary a material property of the material within the layer. There is also provided a method of additive layer manufacturing comprising depositing at least one layer of material on a sacrificial layer, the layer of material having a thickness of 400 microns or less, wherein the sacrificial layer is located on a base surface.