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2. Investment Casting Also known as lost-wax casting, this method utilizes a wax model that is encased in a ceramic shell. Once the shell hardens, the wax is melted away, leaving a cavity for molten metal. Investment casting allows for intricate designs and is often used for precision components in industries like aerospace and medical devices.

3. Reduced Porosity The vacuum action effectively reduces the amount of gas present in the mold, significantly lowering the chances of gas porosity. This is particularly important in applications where the integrity of the metal is paramount, such as in aerospace and automotive parts.