How to fork a repository?

Our company has an ad-hoc central set of code that has (lots and lots) of custom changes for each project. The company doesn't have VCS. Instead, they copy the source code of a project that was similar and start there. For personal use, I can just create a repository for each project I work on and then abandon it. Only, I have a project I just finished and I want to fork it to start on the next project. I want to create a stand-alone repository with no history or link to the previous repository from whence it came. Can someone give me a set of commands that will do this?

If I do eventually get assistance with another member, and they decide to use my project repository, I don't want them to be able to accidentally commit the changes in this project to the original project from which I branched, and I'd just as soon they not be able to see any history of changes from that original branch, either.

I'm thinking about bzr init-repo, bzr init NewProject, copy files to NewProject directory, delete all .bzr subdirectories, then do a bzr add. Sound about right?