I've been trying to get this right for a few years, but never obtained the result I was looking for. Road flares, grinders, torches, candles, and a handful of flammable accelerants ... fun, but not quite right.
Last night ... Ba-ZAM! We made a some mistakes, learned a few tricks, adjusted a some settings, suffered a few injuries (ouch) ... and ended up with exciting results.
Stay tuned for more.