Occasionally, you will get a pencil where the core keeps constantly breaking. First, try changing your sharpener. If that doesn’t work, you can try gently baking them at a low heat to see if that will melt their core back together.
Awhile ago, I noticed that one my of Prismacolor Premier and Blick Studio pencil leads was constantly breaking. Utrecht sent me these instructions: Continue reading “Instructions on How to Bake Your Prismacolor if the Core is Broken”