http://keelynet.com/energy/waterfuel.htm
After realizing how long that post was, I decided to re-find the link and actually just post that here....
There is a detailed schematic on building one's own HHO system... with REFERENCES!
There's something noone expected... :O
Also, for interested science ideas in general, check out
www.keelynet.com
Who was kind enough to host this information free of charge, and help bring knowledge to the public at large.
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"