| 31. | _A dishwasher wears out knife blades and handles.
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| 32. | The saw is played by scraping an object, usually an old knife blade, along the saw's teeth.
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| 33. | A knife blade can peel the edges.
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| 34. | An example of a physical change is the process of tempering steel to form a knife blade.
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| 35. | Wood splinters clung to the knife blade.
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| 36. | By further increasing the angle such that it is too large one can damage the knife blade itself.
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| 37. | Other less common materials used in knife blades include : cobalt and titanium alloys, ceramics, obsidian, and plastic.
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| 38. | More recently, Carpenter developed the Carpenter CTS family of 14 alloys to assist knife blade designers in alloy selection.
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| 39. | If you have short fingernails or find using them painful, you need a knife blade to slide under it.
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| 40. | In total she received 216 separate injuries, mostly stab wounds from a knife blade, with some inflicted by scissors.
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