Mould which incorporates two or more pieces 1 and 2 provided on each of the facing lateral parts with hollows 3 and 4 around which individual surfaces 6 and 8 are arranged, which are slightly inclined towards the posterior/exterior zone of the corresponding piece and which form, in the closed position of the mould, a peripheral annular recess which facilitates the expulsion of the excess clay towards the outside of the mould during forming of the figure. The inclined surfaces 6 and 7 of the pieces 1 and 2 may finish on the inside in the contours of the respective hollows 3 and 4 or in individual annular surfaces 10 and 11 of scant width which start from the contours of the corresponding hollows 3 and 4 and are coplanar therewith.
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