Impossible Japanese pencil carvings

Website documenting the creation of some insanely implausible carvings -- made from common #2 pencils, in Japan.

"According to their forms,they are divided into 4 types - Double spiral, Chain, Ring and Kikko that may be called a honeycomb pencil. Others like Six-fold spiral, Extensible and Triangle, square, pentagon, hexagon are considered to be variations based on one of those 4 types. [...] We are required to be skilled enough for delicate woodwork in carving out a pattern like some kind of a tracery without making any miscut on the naked lead inside."

Link (Thanks, CJC)