 However, Korean movable metal type printing differed from European printing in the materials used for the type, punch, matrix, mould and in method of making an impression.The techniques for bronze casting, used at the time for making coins (as well as bells and statues) were adapted to making metal type.The Joseon dynasty scholar Seong Hyeon (성현, 成俔, 1439–1504) records the following description of the Korean font-casting process