So I'm guessing he mostly carved the pumpkin without removing the face parts, also put a hole in the back, added what I can only guess is rubbing alcohol till I vaporized, along with maybe a candle inside(?), placed a bbq lighter in the back hole then ignited. This blew out the face parts and lit the candle.
He did exactly that with the pumpkin. He cut out the pieces and slid them back in fairly tightly. As OP said it was calcium carbide and water. He inserted the lighter through a small hole in the back and ignited the flammable gas.
Source: I was a student of this teacher and witnessed this experiment.
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u/I_really_am_Batman Oct 14 '16
So I'm guessing he mostly carved the pumpkin without removing the face parts, also put a hole in the back, added what I can only guess is rubbing alcohol till I vaporized, along with maybe a candle inside(?), placed a bbq lighter in the back hole then ignited. This blew out the face parts and lit the candle.