Structure for manufacturing cast article

A method comprising:

• providing a structure for manufacturing a cast article, the structure including:
• an organic component;
• and
• a plurality of inorganic particles on a surface of the structure, wherein:
• at least a portion of the organic component is an organic fiber dispersed on the surface of the structure and in an interior of the structure;
• the structure has a mass reduction rate of greater than 5 mass % to less than 20 mass % when heated under nitrogen atmosphere at 1,000° C. for 30 minutes;
• the plurality of inorganic particles include a first inorganic particle which is not a layered particle, and a second inorganic particle which is a layered particle;
• the first inorganic particle has a first melting point of 1,200° C. or higher, and the second inorganic particle having a second melting point below 1,200° C.;
• and
• the structure has a maximum bending stress of 9 MPa or greater measured in conformity with JIS K7017, and a bending strain of 0.6% of greater at the maximum bending stress.