Turbine component and methods of making and cooling a turbine component

A method of cooling a turbine component comprising:

• supplying a cooling fluid to an interior of the turbine component, the turbine component comprising:
• a root;
• and
• an airfoil extending from the root to a tip opposite the root, the airfoil forming a leading edge and a trailing edge portion extending to a trailing edge, the trailing edge portion having a plurality of radial cooling channels arranged to permit radial flow of a cooling fluid through the trailing edge portion, each radial cooling channel having a first end at a lower surface at a root edge of the trailing edge portion or at an upper surface at a tip edge of the trailing edge portion and a second end opposite the first end at the lower surface or the upper surface;
• and
• directing the cooling fluid through the plurality of radial cooling channels through the trailing edge portion of the airfoil;
• wherein the airfoil comprises a first section and a second section, the first section and the second section being formed by metal three-dimensional printing and at least a portion of the plurality of radial cooling channels being formed at a formed surface of the first section or the second section.