To ensure dimensional accuracy, proper mold design is essential. The mold should be designed with allowances for shrinkage, as most metals shrink as they cool and solidify. Using high-quality mold materials that can withstand the heat and pressure of the casting process without deforming is also crucial. In die-casting, the precision of the die itself plays a major role. Regular calibration and maintenance of the casting equipment, such as pouring systems and injection units in die-casting, are necessary to ensure consistent and accurate operation. Additionally, post-casting machining operations can be used to further refine the dimensions of the part to the required tolerances.