Also, serial numbers can easily and automatically be incorporated into the message data, and special characters, such as logos and industry specific identifiers, can be programmed. Automated reading systems can then be used in downstream processes to read the OCR characters or bar codes. Diestamp Marking Diestamp marking has evolved in a similar fashion. Manual diestamp marking is still done today by workers who apply diestamp marks using hand-held die holders and heavy hammers. The process is slow, however, requiring changing of character dies by hand.
Worker safety is also a concern, and occasional injuries result from careless operation.
Automatic diestamp machines have been developed which use similar formed dieface technology, but vary message format through the use of rotary die wheels on which multiple dies reside. Multiple rotary wheels are automatically rotated to a position which exposes the proper die combination to form the identification. The marking head is then impacted or rolled on the marked surface with great force to indent the diestamp identification into the metal. Since this equipment is also computerized, the message data to be marked is downloaded from a plant computer, eliminating the need for human entry of the message. Variable characters, serial numbers, and logos can also easily and automatically be incorporated into message data.