Although Blake has become better known for his relief etching, his commercial work largely consisted of intaglio engraving, the standard process of engraving in the 18th century in which the artist incised an image into the copper plate, a complex and laborious process, with plates taking months or years to complete, but as Blake's contemporary, John Boydell, realised, such engraving offered a "missing link with commerce", enabling artists to connect with a mass audience and became an immensely important activity by the end of the 18th century.