How is a smaller metal rim fixed on a bigger wooden wheel?
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The metal rim is always made slightly smaller than the wooden wheel. The metal rim is heated. On heating, the rim expands and fit onto the wheel. ... Due to cooling the metal rim contracts and fits tightly onto the wheel
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A metal rim is heated so that it expands and can be fitted over the wooden wheel. when the metal rim cools, it contracts and grips the wheel firmly.
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