And oh, those fires we started with potassium permanganate and.... Those lovely holes we burned in the kitchen table. Arsonists are born, not made. Or is it v. v. ?
DonM, our method was simpler, no cube. We put the wet saturated iodine xyls in place. When they dried... At the time, the druggist would sell us 1/8 lb. iodine crystals for fifty cents. In 1st year high school I was told I would never be a chemist and suspended (for a day or two). I was working on guncotton in my lab desk drawer when the teacher found the experiment in progress. Seems something went wrong and smoke was rising from the drawer. He said he had to penalize me for doing it incorrectly. Oh, lovely days of youthful inquiry! I don't think they really teach practical laboratory chemistry anymore except at the college level.