Invest in a small belt sander and start looking for extremely high grit belts. Horndog would be a good guy to ask about this method, he seems to favor it for his knives. I've heard you have to be careful not to butcher the blade though, and practice practice practice.

For my part, until I can afford a better method, I use a DMT fine grit block to do my rough work, and a ceramic honing rod I got from Bud-K for 10$ to clean the edge up. If I'm careful enough I can get a knife sharp enough to shave with, and the ceramic hone does a nice job of shining the edge up.

and practice practice practice, haha <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />