a method for producing highly dimensionally accurate , deep - drawn half shells with a base region , a body region and a flange region , includes firstly forming a pre - formed half shell from a blank and then shaping the pre - formed half shell into a finally formed half shell , wherein the pre - formed half shell has excess blank material due to its geometric shape and wherein , owing to the excess material during the shaping of the pre - formed half shell into its final shape the half shell is compressed into the finally formed half shell by at least one further pressing process . the method requires that the pre - formed half shell has excess blank material in a transition region between the body region and flange region .