Ok, the moment you've all been waiting for with baited breath. Last week I spoke with Mr K, a renowned local printer, on the newly built canalside in Salford, and asked him this very question (how come the lettering is so shit?).
His answers were as follows:
1. Blake was often doing the works he is now famous for in the evenings, after long days of commercial printing. So he was tired, and they could be a bit sloppy for that reason.
2. He was a well known engraver, and could have done the letters properly if he wanted, using letterpress (there's a rumour he did the letters, uncredited, for Hogarth) but his whole thing with these pieces is that he wanted them to be much more an integration of image and text, cos he was doing his version of illuminated manuscripts.
3. The actual method of how these are made is odd. They are relief prints (eg like lino or woodcut, where the impression is created because an area has been shaved away, but they are a bit more unusual, cos he left the raised bit as the image and text, whereas nowadays you would more likely cut away the image. Ive not explained this very well but basically he made it hard for himself.
4. He taught himself how to how to write backwards, rather than the normal method of writing it normally, then reversing it and copying the resultant pattern.
5. Few more prosaic issues: he was mixing his own colours and probably working with old or worn plates. And it's likely his plates would be damaged after just a few editions.
There, I hope that's cleared things up for people, I could feel the desperation to know the answers. You must all try hard not to read the plain text, instead look at the really unclear words on the plate itself and marvel at the integration with image, remember the limitations thus outlined.
Still not been to the exhibition.