Occasionally, customers will want to compare the investment casting process with forging for manufacture of their components. While both processes are effective metal forming techniques, advantages and disadvantages are on two opposite ends of the spectrum. While both have their advantages and disadvantages, the factor that usually pushes most from forging to investment casting is the limitations on product complexity that forging imposes. While some simple parts with limited surface finish and tolerancing can be very economically forged in large quantities, nearly any complex feature of the geometry or special tolerances make investment casting the better choice.