This patent is for a process for producing a mixture of dry ingredients in solid form capable of conversion with liquid to produce plastic moldable material. The mixture includes material such as newspaper, starch preservative, and plaster of paris, which different particle sizes and densities. The ingredients are dispersed uniformly through a dry mixture, and so maintained by pressure in a solid form for storage and shipping. Addition of water makes the material moldable. Because it is shipped as a solid, problems of settling and separation of the consituents, which affect other paper mache products, are avoided.