thank you for answering all my questions!
a few more:
Q: What sort of membrane could be used to let water pass through it but not gas, and is it easily optainable?
A. Take apart a old battery inside you will find many PEM's, know bubble will pass through them. Personally i don't see any point in separating the gas.
Q:KOH seems dangerous, whats the worst that has happened to someone using it for HHO, when they encountered a meltdown or explosion?
A. Someone COULD get Burned beyond recognition (If they did not rinse it off), blinded...
Q:what ratio should you use to each litre of distilled water?
A. i agree with artnesmith
Q:is all/most brand name drain cleaner useable, or does it need to be pure KOH, and if brand name ones are useable which ones are the best?
A; I dont know of any drain cleaners that is KOH. The drain cleaner i know of are Sodium hydroxide (NaOH)
When you're one step ahead of the crowd you're a genius.
When you're two steps ahead, you're a crackpot."