My best knife sharpener is.... another knife.

[PTRSAK]

I was cutting up some vege's the other night using a generic brand Ceramic paring knife that cost me $15 (from memory) in a kitchenware factory shop and I got to wondering if i could be a complete butcher and use the spine of the ceramic blade to sharpen a steel knife blade.

So I grabbed a "organ donor" SAK off the workbench and using a "steeling" motion against the corner of the back of this little ceramic blade I soon had a very nice bevel on the SAK blade, changing the angle of the ceramic blade so it was less aggressive for a few strokes and then a quick strop on the leg of my jeans I managed to get this old beater shaving sharp and it is a nice looking edge, not all ugly like most stones leave it. (or maybe that's just me... )

I was quite amazed. 

I'm at work at the moment, but I'll try and load a few pic's when I get home.

[PTRSAK]

The Ceramic knife I was using is something like this one

[Mike, Lord of the Spammers!]

That'd be a good solution in a pinch

[theonew]

Nice outside the box thinking

[KiwiMark]

I just grab a coffee cup and stroke the steel knife on the unglazed part underneath - seems to work pretty well.

[Steinar]

Ceramic hone: Usually aluminium oxide.

Ceramic blade: Usually zirconium oxide.

On the Mohs scale, ceramic blades are around 8.5 and ceramic hones around 9, according to what I found on Wikipedia. So, your results are quite natural.

[jacknife]

I got stuck in work one day with a dull knife and no sharpener  I had an idea...
I used a metal ruler as you'd use a smooth butchers steel...it worked. It wasn't the best edge I'd ever put on a blade but it got me through till I had a sharpener.