Sprig molds are used to easily add decorative elements and embellishments to moist clay projects. Molds facilitate the creation of textured, embossed and decorative clay surfaces. Just press moist clay onto the porous plaster molds then lift and either hand-build or add the textured clay to already thrown pots. Textured designs can enhance artwork, both in terms of adding imagery as well as affecting the glaze and underglaze colors. Recommended for water-based clays only. Since the plaster naturally absorbs water and releases the clay, no release agent is needed. To transfer the design to your clay slab, place slab on mold, and either use a heavy clay roller, or press firmly with your hands. Remove clay from mold and shape into any form you desire. Molds are white. Image shows positive impression of mold in clay. Features 4 butterfly designs; sizes range from 2-1/2" to 3-1/2" wide and 2" to 3" tall.