The CarveWright can work in most soft materials including all woods (including exotic hardwoods), plastic, and foam. Suitable plastics are polycarbonate or cast acrylic. For reference, the picture of the woman's head shown on the Results page of the website is 14" by 18" and took about 90 minutes to carve in white polycarbonate. At present, the CarveWright does not carve in metal, ceramic tile, stone, glass, or concrete.