wordworksweb.com: I really rather you didn't. Any domain with the word "web" in it implies online only, and a rather old-fashioned online only at that.

thewordforge.co.uk: It's ok. I should like it more than I do; I think it's the definite article, which people will probably have trouble remembering - they'll try to go to wordforge.co.uk instead.

moltenwords.com: To me, this implies unformed and unfinished.

burnishedwords.com: I like this a lot. "Burnished" is classier than "polished", and implies a high level of quality, while still having a faint air of whimsy about it.

hotmetaltype.com: Enh. It's a great domain, but I expect it to have downloadable fonts or pictures of movable type or something.