| 摘要 |
<p>A device comprising a ceramic or wax first form comprising: a plurality of surface artifacts that are integral to the first form and substantially spatially replicate a surface geometry of a stacked foil mold; and a prong that has a predominantly ceramic composition, is integral to the first form and is adapted to form a first hole in a metallic cast product that is cast in a molten state substantially around the first prong, is adapted to substantially structurally disintegrate due to thermal stresses imparted on the first prong as the metallic cast product cools from a molten state to a solid state, and defines a prong longitudinal axis, an intersection of the first form and the first prong defining a fillet that is integral to the first prong and the first form, the fillet defining a first midpoint fillet depth measured in a first plane that contains the prong longitudinal axis, the fillet defining a second midpoint fillet depth measured in a second plane that contains the prong longitudinal axis, the first plane separated from the second plane by a predetermined angle measured perpendicular to the prong longitudinal axis.</p> |
