In the coming months, Sylvester's life was just—work, invent, train and sleep—as he completely drowned himself in work.
Finally, in three months, he finished making the printing press, but then he realised that if he arranged the letter moulds by hand, it would take him a week to set a single page on a printing press.
So, he had to create another smaller machine, which was controlled by magic runes. The principle was simple. By putting a lot of moulded letters in a keyboard-like container, Sylvester created a sort of typesetter.
Using runes and small trapdoors, he made a keyboard table with small, long empty spots for putting stacks of each led-tin moulded letter. Then, with magic, he'd open the trapdoor, and his desired letters would fall to create words and lines.