| 摘要 |
The invention relates to a lost pattern (M) intended for use in casting for obtaining metal parts and comprising a stack of layers (1,2,3,4,5) assembled together by glueing. Said lost pattern comprises at least one enclosed recess (6,7) which is jointly defined by two recess portions belonging respectively to two successive layers (3,4), termed respectively the lower layer (3) and the upper layer (4), of the stack. |
