An embodiment of an apparatus includes a deposition chamber, a workpiece fixture including a first workpiece holder, and a first crucible. The workpiece holder is configured to retain a first workpiece in the deposition chamber. The first crucible includes a body including at least one wall defining a non-circular upper recess with a base. A first lower recess is formed below the base of the upper recess and configured to retain a first primary coating feedstock therein.