A protective mask for a part, the part including a plurality of openings in a surface thereof, is provided. The protective mask includes a mounting member at least partially within each of at least two of the plurality of openings. Each mounting member includes a water soluble material. A masking member couples the at least two mounting members. The masking member includes a non-water soluble material. Each mounting member includes a first plurality of integral layers of the water soluble material, and the masking member includes a second plurality of integral layers of the non-water soluble material. The protective mask can be made by a two material additive manufacturing system. A related method is also provided.