How the iron blade gets fixed in the wooden handle
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First, the ring in the iron blade of spade is heated. Heating of the blade leads to its expansion and thus the ring gets bigger. This happens because metals always expand on heating.The metal bladw is then fitted easily into the wooden handle. After this, cold water is usually poured on the iron blade which leads to the contraction of the expanded iron blade. The spade can also be left to cool down, undisturbed so that it is firmly fixed. The blade is attached firmly to the wooden handle of a spade in this process.
HOPE IT HELPS YOU.
First, the ring in the iron blade of spade is heated. Heating of the blade leads to its expansion and thus the ring gets bigger. This happens because metals always expand on heating.The metal bladw is then fitted easily into the wooden handle. After this, cold water is usually poured on the iron blade which leads to the contraction of the expanded iron blade. The spade can also be left to cool down, undisturbed so that it is firmly fixed. The blade is attached firmly to the wooden handle of a spade in this process.
HOPE IT HELPS YOU.
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Metal rim is made slightly smaller than the wooden wheel. On heating rim expands and fits into wheel. Cold water is then poured over rim, which contracts and fits tightly onto the wheel.
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