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method for incorporating of thin holes, e.g. schmierloechern or entlueftungsloechern in special heavy wall gusstuecke and giessmodell, especially vollformgiessmodell to this procedure
method for incorporating of thin holes, e.g. schmierloechern or entlueftungsloechern in special heavy wall gusstuecke and giessmodell, especially vollformgiessmodell to this procedure
