Cubipods are heavy concrete objects used as protection means for dyke or breakwater mantles on coasts or the like and have a cubic or orthohedral shape with projections on the faces (3) thereof; the number, position and geometric shape of said projections (2) may vary. The mold comprises a table (4) with a plate (6) wherein is hollowed a recess (5) corresponding with the lower projection of the cubipod (1) and has support legs (9) on a rigid plinth (10). A prismatic casing (11) with the cubipod (1) shape but lacking the upper base, rests on the table (4). A frame of profiles (18, 19) with a hood (17) for forming the upper projection is hinged on an upper edge. Mould removal is achieved by raising the casing (11), after taking away a number of dihedral surfaces (14-15) which form the lower face of the projections (2) and lower part of the casing.