an apparatus and method for making plastic molded articles generally having a double - skinned configuration with a foamed interior extending between the two skins . such an article can be produced with a double beauty finish , and various inserts can be placed within the foamed interior between the two skins . the apparatus of the present invention includes the machinery used in order to make such a plastic article . the heated mold configurations can be made of inexpensive aluminum , compared to the traditional stainless steel production mold , and therefore will help the manufacture of large molded plastic articles .