The pigment bit in the colored pencil has a waxy base that will build up and jam/get stuck in the sharpener. Graphite doesn't. It can be used as a lubricant in some ~~non sexy~~ situations.
The pigment bit in the colored pencil has a waxy base that will build up and jam/get stuck in the sharpener. Graphite doesn't. It can be used as a lubricant in some ~~non sexy~~ situations.