A mold includes a first mold portion, a second mold portion, and a projection. The second mold portion is secured against the first mold portion along a draw axis to form at least one mold cavity. The second mold portion includes an internal surface oriented at an oblique angle relative to the draw axis. The projection extends from the internal surface along a projection axis. The projection forms an elongated profile including a first end, a second ends, and a pair of side surfaces extending between the first end and the second end.