Precision casting technology plays a crucial role in manufacturing complex, high-precision metal parts, such as aero-engine blades. In this process, methyl orthosilicate (ME) acts as a key "binder." It can be mixed with refractory materials such as silica sand to create a high-strength mold. Under specific conditions, ME undergoes hydrolysis and condensation reactions to generate a silica network with extremely high binding strength, firmly binding loose sand particles together to form a robust mold. This mold is not only extremely dimensionally stable but also resistant to deformation or cracking when pouring high-temperature molten metal. As a binder for precision casting, ME greatly improves the surface finish and dimensional accuracy of castings, making it an indispensable auxiliary material in modern high-end manufacturing.