The Jargon File (version 4.4.7, 29 Dec 2003):
sandbender n. [IBM] A person involved with silicon lithography and the physical design of chips. Compare ironmonger, polygon pusher.The Free On-line Dictionary of Computing (30 December 2018):
sandbender [IBM] A person involved with silicon lithography and the physical design of integrated circuits. Compare ironmonger, polygon pusher.