HEALTH WARNING: A rebreather is a serious and sophisticated life support device which is perfectly capably of killing you without warning. Always know your ppO2. Messing around with caustic and oxidising materials is dangerous. Reliance on one of these devices to keep you alive is foolhardly - but great fun!
WEALTH WARNING: Making your own rebreather may not be as cost-effective as it may first appear. In the long term, the money spent on buying small components can become significant. Add the amount of time spent on making and testing it, and you might be better off buying or modifying a commercial unit. Homebrew rebreather's (whilst not for the fainthearted) can, however, be a rewarding form of "adult entertainment"!
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