I live in a place where the humidity hangs around 90+% year round, and most of the time it takes a bit of work to get a nice coal. However in say the desert SW of the US where humidity hangs about 30-50% much much easier so I accomodate the method to the temperate climate around me. A bamboo saw is great in the wetter climates, hand drill in arid for example. Does anyone have a special technique in different climate ranges?