Is there any free solution to remove unneeded architectures from Universal ppc/intel binaries? I am aware about an application that is able to remove unneeded architectures from Universal binaries - XSlimmer.

Still, I am looking for a free solution for this because I am not willing to pay for this kind of service.
All tools to manipulate architectures in binaries are covers over lipo the command line tool that Apple supplies as part of the Developer tools