Turbine components with cooling features and methods of manufacturing the same

A method for forming a hot gas path component, comprising:

• forming one or more channels in an external surface of the hot gas path component;
• connecting the one or more channels to one or more internal passages within the hot gas path component such that channels and the internal passages are in fluid communication;
• mechanically pressing a single filler material into the one or more channels to deform the single filler material to conform to the one or more channels such that the one or more channels are substantially filled with the single filler material, wherein the single filler material comprises a solid metal or a metal alloy material that conforms to a cross-sectional shape of the respective channels;
• applying at least a first layer to the external surface of the hot gas path component such that the one or more channels are covered;
• forming one or more cooling holes through at least the first layer;
• and removing the solid metal or metal alloy material from the channels.