Vitreous device to change apparent density within a metal casting

A casting, comprising:

• a cast wheel provided for an automobile vehicle including multiple spokes, individual ones of the multiple spokes being substantially identical to the other ones of the multiple spokes and are equidistantly spaced from a successive one of the multiple spokes to maintain an even weight distribution of the cast wheel;
• the multiple spokes extending inwardly from a raised bead of a spider section to a centrally positioned axle receiving portion;
• a central portion of individual ones of the multiple spokes completely encapsulated by a metal of the multiple spokes;
• and
• an insert member of a vitreous material positioned in individual ones of the central portions, the insert member having a higher melting point than a melting point of a metal of the cast wheel the insert member displaces.

A method for creating a localized lower apparent density within a cast wheel, comprising:

• casting a wheel for an automobile vehicle including multiple spokes, individual ones of the multiple spokes being substantially identical to the other ones of the multiple spokes;
• extending individual ones of the multiple spokes inwardly from a raised bead of a spider section to a centrally positioned axle receiving portion;
• completely encapsulating a central portion of the individual ones of the multiple spokes by a metal of the multiple spokes;
• and
• positioning an insert member in individual ones of the central portions, the insert member defining a vitreous material having a higher melting point than a melting point of a metal of the wheel the insert member displaces, having the insert member remaining permanently in place for a life of the wheel and is retained in a specific location.