This disclosure forms a cubic body that can easily be dismounted from a table. A three-dimensional printing machine (1) has an ink-jet head (4B) for forming each layer of a supporter (S) with a supporting material. The ink-jet head (4B) discharges a first supporting material and a second supporting material, as the supporting material, for forming each layer of the supporter (S); adhesive strengths of the first supporting material and the second supporting material, for adhering to the table (7), being different from each other.