Steady-pin
An extra-long box-pin or slide, for maintaining a true vertical position when a cope with a deep straight lift is being raised. Also, a long, straight attachment to a pattern, or card of patterns, that extends some distance below in order to assure a true horizontal and vertical position during the process of drawing from the sand. The pin that is fixed on a pattern directly over where it is intended that a core shall protrude, to form a hole through the cope into which the top end may be guided, and thus keep it in a horizontal position, as well as permitting a vent to be carried off safely, is also termed a steady-pin. The wood or iron projections for guiding the halves of patterns and holding them to match are often called by that name. See PIN; FLASK.