 His method of casting type may have differed from the hand-mould used in subsequent decades.Detailed analysis of the type used in his 42-line Bible has revealed irregularities in some of the characters that cannot be attributed to ink spread or type wear under the pressure of the press.Scholars conjecture that the type pieces may have been cast from a series of matrices made with a series of individual stroke punches, producing many different versions of the same glyph.