while making a spade an iron Blade is fitted to the wooden handle a. by heating then cooling b. by cooling then heating c. by melting then cooling d. Be freezing
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The iron blade of soil digging tools has a ring in which the wooden handle is fixed. Normally, the ring is slightly smaller in size than the wooden handle. To fix the handle, the ring is heated and it becomes slightly larger in size (expands). Therefore, the handle easily fits into the ring.
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