After the core and cavity inserts have been initially sized,the mold layout can be further developed and the mold base selected,It is critical to order a mold with appropriately sized plates and materials,since any mistakes in the mols base selection can consume significant time and expense,To determine the appropriate size,the mold designer must first arrange the mold cavities and provide allowances for the cooling and feed systems.Afterwards,the mold designer should select a standard size from available suppliers and nerify suitability with the molder's molding machine.