These could be decorative blocks, although I'd enjoy the mock-engineering of making them functional somehow.
Conduit - A Conduit block is partially unsolid and transparent. The central 4x4 voxels along one axis are solid and opaque. Conduit should come in various colors, including glowing ice crystal blue and lava red. Useful for antennas, decorative pipeworks, accent lighting.
Angled conduit - Like above but instead of running to opposite faces, the conduit runs straight between the centers of two adjacent faces.
Plate - A Plate block is partially unsolid and transparent. 1 face of the block, 4 voxels deep is solid and opaque. Plate is useful for hull accents or lighting when applied to a ceiling or wall. A plate can also be used as a thin internal bulkhead.
All of these blocks would be decorative and non-structural with low damage resistance.
Conduit - A Conduit block is partially unsolid and transparent. The central 4x4 voxels along one axis are solid and opaque. Conduit should come in various colors, including glowing ice crystal blue and lava red. Useful for antennas, decorative pipeworks, accent lighting.
Angled conduit - Like above but instead of running to opposite faces, the conduit runs straight between the centers of two adjacent faces.
Plate - A Plate block is partially unsolid and transparent. 1 face of the block, 4 voxels deep is solid and opaque. Plate is useful for hull accents or lighting when applied to a ceiling or wall. A plate can also be used as a thin internal bulkhead.
All of these blocks would be decorative and non-structural with low damage resistance.