I know there are lots of guys here who are involved with knife making. So I'm keen to find out a simple, low cost way of touching up the edges on some good quality German brand kitchen knives using either my Japanese water stones or simply a diamond stone. However I'd also been interested in other methods of sharpening that don't involve some absurdly expensive, available only in [country of choice] device.
PS I'm counting on you guys. This will make my wife very happy and provide another 12 months worth of justification for having many thousands of dollars worth of tooling and machinery, thereby allowing me to say "Well, you think they're sharp, if only I had a [insert next machine desired] I could make them REALLY sharp. Such a shame I don't have it."