You get the same thing with butane when making BHO, the butane pools on the floor & explodes
- a quick google for BHO explosion will show you the danger...
I've only ever done this outside & the 2nd time I did it, I had a mate with me, who could be classed as a gas expert - he sat the other end of the garden as he thought even doing it outside was too dangerous! - I won't even repeat what he said when I told him people do this indoors!
Anyway, suffice it to say that I looked up the dangers & it makes shocking reading! The main issue appears to be that when the vapour ignites then it expands... and expands hugely! That's the real issue with doing it indoors, there isn't enough expansion room so walls & ceilings give
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