Black Board on one side, White Board on the other.
Peel off plastic on white side before using.
4 x 4″ Thin steel (0.015″; 28 gauge) with ground coat and white on face side, ground coat only on back side. About 60% thinner than our Enameled Iron Tiles (18 gauge). Coat the back side with Scalex and fire flat on a wire mesh. Use standard contact adhesive to bond finished piece to plywood or other backing.
Example is a John Killmaster art piece that has a black granular spray on the surface of the tile (as sold), then dried and drawn with sgraffito technique.
4 X 4 THIN STEEL PLATE 28 gauge with ground coat and white on face side, ground coat only on back side