Early 20th century Arts And Crafts Style tile mantel by Batchelder Tile Company. The style in which Batchelder worked was highly distinctive. First, he used a single-fire process known as engobe in which a primary wash of colored clay slip (usually pale blue) was applied to the surface of the tile before being fired, pooling in the recesses of the design, with excess being wiped off. Then the tile was fired. A typical glazed tile is fired twice–once before glaze, and once after, thereby...