Abstract: A method for cutting a honeycomb molded body includes applying laser in a wavelength range of from about 0.7 ?m to about 2.5 ?m to the honeycomb molded body to form a cut guide groove on a periphery of the honeycomb molded body. The honeycomb molded body is made of a material including silicon carbide. The honeycomb molded body is manufactured by extrusion molding. The honeycomb molded body has a number of cells, a cell wall interposed between the cells and a peripheral wall formed on a side face of the honeycomb molded body. The cells are placed in parallel with one another in a longitudinal direction of the cells. The honeycomb molded body is cut along the cut guide groove to a predetermined length using a wire.

Abstract: The vacuum chuck according to the present invention is provided with a sucking plate for sucking and holding an object to be sucked, in which a sucking layer made of a porous ceramic and a dense material layer are integrated, the sucking layer being located on the side for sucking the object to be sucked, wherein the dense material layer is formed by impregnating the porous ceramic with a metal.

Abstract: The vacuum chuck according to the present invention is provided with a sucking plate for sucking and holding an object to be sucked, in which a sucking layer made of a porous ceramic and a dense material layer are integrated, the sucking layer being located on the side for sucking the object to be sucked, wherein the dense material layer is formed by impregnating the porous ceramic with a metal.