For all those people out there wanting to test the output of their HHO with a lighter driven by their thumb, I highly recommend that you DON'T do this. It could either burn your hand bad, blow your finger off, blow your hand and/or arm off, or shoot shrapnel into your chest and kill you. Sure, the odds are low that bad stuff could happen to you because the gas already has an output with the least resistance in this video, but you never know and it's best to play it safe.