Piece by ceramic material with a base and a veil

The present invention relates to a workpiece (10) of ceramic material comprising a base portion (11) and a part forming a web (13) characterized in that the base (11) is made of low porosity ceramic material and web (13) is obtained by powder sintering, and it comprises a casing (13 E) and heart (13N), the heart being inside the casing, the porosity of the heart being greater than that of the based.