Higher temperatures lead to increased evaporation and surface drying. This mixture is wet and must be dried after transfer to drying trays. Washing, stretching, drying and crimping complete the processing. This process includes several steps such as filtration, evaporation, drying, grinding, and sifting. The cost of washing and drying diapers must also be considered. In general, harvesting consists of drying and curing. Possibly followed by quenching in water and drying. Slow drying in shade reduces cracking. Sausages may be preserved by curing, drying, or smoking. The process of artificial or 'oven' drying consists basically of introducing heat. The fibers have relatively thick walls that prevent collapsing upon drying. A solar kiln is a cross between kiln drying and air drying. Solar cookers use sunlight for cooking, drying and pasteurization. Copra can be made by smoke drying, sun drying, or kiln drying. The cloth is then wound over drying rollers.