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Scraping a knife sharpener back and forth across wood
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Scraping knife sharpener hard and short on wood
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Knife scrapes blade sharpener
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Hit a blade sharpener with a knife
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Sharpening a pencil with a personal hand sharpener
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Sharpening a pencil with an electric sharpen
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Knife scraping on a sharpener, short scrape
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Knife scraping on a sharpener, long scrape
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Plastic scraping on a knife sharpener
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Knife scraping on sharpener