Hello,
I first made the device described here : http://www.geocities.com/hairfreethere/, but i wasn’t really satisfied with it : is low voltage (9V) implies good contact with the electrodes, and i’m not happy too use a sponge salted water as electrode.
So I made my own device, you can find a description and a schema here : http://www.freewebtown.com/electrolyse/index_en.html
Regards
(sorry for my English, I’m French)