just made two last night, one is a candle with 8 wicks = lots of light
the other is one of the corrogated cardboardspiral with wax = cooker
very pleased with both, used the heater to melt a load of vaseline to dip cotton balls in. Three burns in & other than the top charring nicely, it doesn't seem to have used any wax
I'll do some boil time testing over the weekend...