What kind of wood shafts do these work best on?The pencile sharpener type.
any wood as long as the blades are sharp.
I've used a Tru-Center taper tool on POC, ash, maple, doug fir, and a pencil.
They work pretty good on POC and pine. Fir and spruce come out pretty rough and they are slow on the hardwoods. A disk sander and a guide is much better, but not nearly as compact.