This article missed the point. Gutenberg didn't invent metal movable type and that's not why we remember him. He invented making a repeatable casting method with appropriate alloys for metal type that had accurate enough uniform dimensions that he could to use a wine press mechanism to press paper onto the uniform surface.
The molding method he made was astounding clever and went far beyond using basically metal coin minting process that has existed for thousands of years around the world.
The molding method he made was astounding clever and went far beyond using basically metal coin minting process that has existed for thousands of years around the world.