How are the markings – the red and blue lines, goal lines, crease and face-off circles – applied to the ice?

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How are the markings – the red and blue lines, goal lines, crease and face-off circles – applied to the ice?

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The ice is built up to a half-inch thickness by spraying water over the concrete floor, which has the freezing pipes embedded into it. Then the markings are painted on, after which additional water is sprayed to coat the markings and build the ice to the prescribed thickness.