I am a Delta Sharpening Machine (DSM) user. See this thread for all the details...http://www.knifeforums.com/forums/showtopic.php?tid/821501/tp/1/

Note that into the thread there is a mention/link to a sharpening thread in scrapyardknives.com

Also, be sure and check out the Trizact belts that are mentioned. They're the greatest!