Stonecutter

That could be difficult, considering that I'm now in my mid-40s and the teacher in question is in all likelihood dead.

Back in grade 5, our class made candles. Simple ones, of course, just wax poured into the bottom half of a milk carton, with the carton then peeled off. The unusual part was the wick: We didn't put fabric wicks in the candles, but placed what, as far as I can recall, looked like cones of pumice with flared bases on top of the wax. Does anyone have any idea what the wicks were, and if they're available where I could find them?