Ludlow mat cabinet and 26 drawers of mats donated to the museum by Don & Craig Black, owners of Don K. Black Linecasting Service Ltd.
The Ludlow system uses molds, known as matrices or mats, which are hand-set into a special composing stick. Once a line has been completed, the composing stick is inserted into the Ludlow machine, which clamps it firmly in place above the mold. Hot linecasting metal (the same alloy used in Linotype and Intertype machines) is then injected through the mold into the matrices, allowed to cool, and then the bottom of the slug is trimmed just before it is ejected. The operator then replaces the matrices, or mats, back into the typecase by hand. Since the mats are of a consistent height, irrespective of typeface size, they are easier to handle than lead type.