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Let’s first talk about the main difference between investment casting and CNC machining?  Investment casting is a mold forming process; first, the mold (sand mold) is made, and then the metal liquid is cooled under the action of its own gravity to obtain the product. Due to the fluidity of liquids, investment casting can form products with complex structures. The precision of investment casting parts is not as high as that of CNC machined parts, but the cost is much lower than that of CNC machined parts. CNc Machining is a molded product obtained by CNC cutting of solid metal materials. The machining cost is relatively high, but it can also achieve higher precision.