The "lucignoli" are placed over each other, and are pressed by band, inside and out, molding them at the same time. The molding technique. The tradition is also perpetuated in the old molding techniques with sectional molds. The clay is firmly pressed against the inside of a plaster mold so that it makes a faithful impress. Drying. Art is also history. The pieces are left to dry naturally, just like the Etruscans used to do, under outdoor sheds, or indoors at constant, hot, even temperatures. The items shrink 4-6% during drying. The firing. The alchemy of cotto springs from the earth, air, water and fire. The unmistakable colors of cotto are developed through firing in kilns at over 980 C. During firing the items shrink yet another 8 -10%.