A 'Hand mould' is a two-part mould used for
casting small metal objects that could be operated by hand. In particular, it refers to a system for casting
movable type, pioneered by
Johannes Gutenberg, which was widely used in the early era of printing in Europe (15th-16th century).
In this method, the type was made by punching a letter-shaped cavity in a ''matrix'' made of some soft metal (typically copper). Then this matrix would be held in
the lower part of the mould, the upper part would close on it, and molten type metal would be poured into the cavity. Using the hand mould, the printer could quickly make any additional type he might need.