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The heart of the caster
The diecase shown
here holds up to 17*15 (ie 255) matrices, each of which is the 'negative' of one
character, eg a lower case italic e, or a small cap B. As the caster is run, the
diecase is moved to place the appropriate matrix over a mould, type metal is
forced in, the mould opens, and the cast 'sort' emerges top middle of this
picture. Sorts (characters or spaces) build up to form a line of type. Once the
line is complete, it is moved down the galley and the next line is started. To
the right of the picture is the galley of freshly cast type. The diecase shown
is for 14pt Octavian, which Harry used to cast the type for our book Jump of
the Manta Ray.
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