Question about the moulds

anyone knows if make the moulds with chalk is a good idea ?

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@tabbia,

Chalk itself is one of the softest materials, and if used for the mould, will stick to the plastic.
May be you meant to ask about clay? Clay is a better option, suitable for this task and probably easily accessible at a local store.

Clay is a better option, calendar suitable for this task and probably easily accessible at a local store.

october 2017 calendar