The shell molding process is a casting method that solidifies sand using thermosetting resin as a binder to produce thin, shell-shaped molds. By blowing resin-coated sand onto a heated metal pattern and curing it, molds with high dimensional accuracy and excellent surface finish are obtained. A major characteristic of this manufacturing method, compared to conventional green sand casting, is its ability to mass-produce parts with complex shapes more precisely and stably. It is primarily used in the manufacturing of automotive parts (such as crankshafts and camshafts), hydraulic equipment parts, and various machine parts, and is compatible with a wide range of materials including cast iron, cast steel, stainless steel, and non-ferrous metals. Automation is easy, contributing to improved productivity.