A method of manufacturing a heat shield panel assembly, the method comprising: forming a heat shield panel, wherein the heat shield panel comprises one or more orifices; and forming each of one or more threaded studs through operations comprising: providing a mold comprising a negative cavity of the threaded stud; introducing melted metal into the negative cavity of the threaded stud; and removing the threaded stud from the mold, characterised by heating the mold containing a negative cavity of the threaded stud to a first temperature, wherein the negative cavity is fluidly connected to a helix grain selector located below the mold and on top of a cooling platform thermally connected to the helix grain selector; introducing melted metal into the helix grain selector when introducing melted metal into the negative cavity of the threaded stud; allowing metal in the negative cavity of the threaded stud and the helix grain selector to reach a selected equilibrium temperature; cooling metal within the helix grain selector using the cooling platform starting from the cooling platform and moving towards the mold; slowly lowering the mold into a cooling source to allow solidification of metal within the negative cavity of the threaded stud from a bottom of the mold to the top of the mold to form the threaded stud; and forming each of the one or more threaded studs separately from the heat shield panel. forming a heat shield panel, wherein the heat shield panel comprises one or more orifices; and forming each of one or more threaded studs through operations comprising: providing a mold comprising a negative cavity of the threaded stud; introducing melted metal into the negative cavity of the threaded stud; and removing the threaded stud from the mold, characterised by heating the mold containing a negative cavity of the threaded stud to a first temperature, wherein the negative cavity is fluidly connected to a helix grain selector located below the mold and on top of a cooling platform thermally connected to the helix grain selector; introducing melted metal into the helix grain selector when introducing melted metal into the negative cavity of the threaded stud; allowing metal in the negative cavity of the threaded stud and the helix grain selector to reach a selected equilibrium temperature; cooling metal within the helix grain selector using the cooling platform starting from the cooling platform and moving towards the mold; slowly lowering the mold into a cooling source to allow solidification of metal within the negative cavity of the threaded stud from a bottom of the mold to the top of the mold to form the threaded stud; and forming each of the one or more threaded studs separately from the heat shield panel. providing a mold comprising a negative cavity of the threaded stud; introducing melted metal into the negative cavity of the threaded stud; and removing the threaded stud from the mold, characterised by heating the mold containing a negative cavity of the threaded stud to a first temperature, wherein the negative cavity is fluidly connected to a helix grain selector located below the mold and on top of a cooling platform thermally connected to the helix grain selector; introducing melted metal into the helix grain selector when introducing melted metal into the negative cavity of the threaded stud; allowing metal in the negative cavity of the threaded stud and the helix grain selector to reach a selected equilibrium temperature; cooling metal within the helix grain selector using the cooling platform starting from the cooling platform and moving towards the mold; slowly lowering the mold into a cooling source to allow solidification of metal within the negative cavity of the threaded stud from a bottom of the mold to the top of the mold to form the threaded stud; and forming each of the one or more threaded studs separately from the heat shield panel.