If you want to carry parts of your a..s on your chin just go ahead and use hydrogen.
bak bak bak bak BAAAAK bak bak....
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Hydrogen by it's self is no more dangerous than any other flammable gas. It's
the oxygen part that starts to get dangerous.
They used to do space vehicles with the crew compartment filled at ~100% oxygen. Then some astronauts burned alive and they stopped doing that. Turns out every day household items (such as Velcro) become as flammable as gasoline when in a pure oxygen environment. And of course, if you finely divide and evenly mix any fuel with oxygen, it becomes an explosive(deflagrating or detonating) mixture. And gases tend to do this automagically, so your concerns are not entirely unjustified.
Edit: Diver300 beat me to it I guess
-/)
"ze zeppelin" that "exploded" (burned down) was a massive disaster because of the shear size and number of people involved. My balloon is quite small in comparison and should only involve me, so I'm not that worried.
This is the piece of equipment you need:
**broken link removed**
Seal off the tube so the gas will enter a balloon.
Keep letting out the oxygen.
Hummm.... I like that apparatus. To bad it's glass. But then again, I suppose it doesn't have to be. The problem I see with that is that I'm going to have to use large voltages to get the before mentioned ~27 Amps to pump out, do to the large spacing of the electrodes. I suppose I could use direct off-the-line power, then I can add electrocution to the ever growing list of dangers.
The balloons are normal everyday large rubber balloons. So they will require some kind of pressure to inflate. But if one blows them up (no explosives related pun intended) a few times they will stretch out, which will make it easier to fill them later.
I don't want to use mechanical pumps, that involves complexity and I believe that the generated pressure is enough to inflate such things. Just need to trap the gasses and force them through a particular port.
Anyway, Good stuff guys.
-()blivion