So how many charge rings on the water bottle?
And whatever you do, do not drop the loaded one upside down, or you will suddenly find yourself alone on the firing line...
“Hey, where did every body go?”
(Distant voice.....) “Pick up the tube, and shake it!”
It’s an Oxy/Acetylene powered device.
Although it has been noted that sufficient volatile gas remains after discharge to produce an explosion if the ignition is left on.
We’re wary of that now.