This site tutorials on how to make some blocks, which I'm sure the authors would be happy you using as a source.
Making a copper water block:
http://www.procooling.com/articles/h...-_onda___1.php
The #rotor is also a good way to start, using only a drill press and a dremel, and on the site (though I think it's down), he's rather 'open-source' about the project.