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.
Hmm, I’d be way to scared to make my own device, but I can recommend some of the products already on the market. I bought a Silkn and I absolutely love it. I got such great results. It works well and it’s totally safe.