Growing tired of my chalk breaking when I tried to mark on rough surfaces, I took a lesson from children’s crayons.

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Growing tired of my chalk breaking when I tried to mark on rough surfaces, I took a lesson from children's crayons. I wrapped masking tape around the chalk to reinforce it. After the chalk wears down, I just tear off a little tape to expose more. Works like a charm.
—Jose Salazar, Indian Springs, Nev.