An injection mold comprising: a mold cavity; and an injection molding conduit (30,40) having: a first end; a second end defining an outlet in fluid communication with the mold cavity; a first interior transverse dimension that is perpendicular to a longitudinal axis of the injection molding conduit; and a second interior transverse dimension that is perpendicular to the longitudinal axis and to the first interior transverse dimension; wherein, at the second end, the second interior transverse dimension is at least two times larger than the first interior transverse dimension; wherein the second interior transverse dimension of the injection molding conduit is substantially aligned with a thickness of a portion of the mold cavity that is adjacent to the outlet of the injection molding conduit and characterised by: first and second cavities extending from opposing sides of and in fluid communication with the injection molding conduit; wherein each of the cavities is defined in part by a surface (128,134) that extends between the injection molding conduit and a periphery of the cavity; wherein, for each of the cavities: the surface is angularly disposed at a non-perpendicular angle relative to a plane that is aligned with the longitudinal axis of the injection molding conduit and bisects the injection molding conduit; and/or a line that extends along the surface in a direction from the first end of the injection molding conduit and toward the second end of the injection molding conduit is angularly disposed at a non-perpendicular angle relative to the longitudinal axis. a mold cavity; and an injection molding conduit (30,40) having: a first end; a second end defining an outlet in fluid communication with the mold cavity; a first interior transverse dimension that is perpendicular to a longitudinal axis of the injection molding conduit; and a second interior transverse dimension that is perpendicular to the longitudinal axis and to the first interior transverse dimension; wherein, at the second end, the second interior transverse dimension is at least two times larger than the first interior transverse dimension; a first end; a second end defining an outlet in fluid communication with the mold cavity; a first interior transverse dimension that is perpendicular to a longitudinal axis of the injection molding conduit; and a second interior transverse dimension that is perpendicular to the longitudinal axis and to the first interior transverse dimension; wherein, at the second end, the second interior transverse dimension is at least two times larger than the first interior transverse dimension; wherein each of the cavities is defined in part by a surface (128,134) that extends between the injection molding conduit and a periphery of the cavity; wherein, for each of the cavities: the surface is angularly disposed at a non-perpendicular angle relative to a plane that is aligned with the longitudinal axis of the injection molding conduit and bisects the injection molding conduit; and/or a line that extends along the surface in a direction from the first end of the injection molding conduit and toward the second end of the injection molding conduit is angularly disposed at a non-perpendicular angle relative to the longitudinal axis. the surface is angularly disposed at a non-perpendicular angle relative to a plane that is aligned with the longitudinal axis of the injection molding conduit and bisects the injection molding conduit; and/or a line that extends along the surface in a direction from the first end of the injection molding conduit and toward the second end of the injection molding conduit is angularly disposed at a non-perpendicular angle relative to the longitudinal axis.