Method and assembly for forming components using a jacketed core

A method of forming a component having an outer wall of a predetermined thickness, said method comprising:

• introducing a component material in a molten state into at least one jacketed cavity defined in a mold assembly, the mold assembly including a jacketed core positioned with respect to a mold, wherein the mold includes an interior wall that defines a mold cavity within the mold, and the jacketed core includes:
• a jacket that includes a first jacket outer wall coupled against the interior wall, a second jacket outer wall positioned interiorly from the first jacket outer wall, and the at least one jacketed cavity defined therebetween;
• and
• a core positioned interiorly from the second jacket outer wall, the core including a perimeter coupled against the second jacket outer wall, wherein the jacket separates the perimeter from the interior wall by the predetermined thickness;
• cooling the component material to form the component, wherein the perimeter and the interior wall cooperate to define the outer wall of the component therebetween;
• and
• forming the jacket around a precursor component, wherein the precursor component is shaped to correspond to a shape of at least portions of the component and an outer wall of the precursor component includes at least one outer wall aperture defined therein and extending therethrough, and forming the jacket further comprises forming at least one stand-off structure on the at least one outer wall aperture, the at least one stand-off structure separates the perimeter from the interior wall by the predetermined thickness.