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The barcodes represent tool mark impressions. Match the barcodes. Compare your results to evidence collected at the crime scene found in the common area. THEN HAMMER OUT THE DETAILS!

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Class  vs individual Characteristics.jpg

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A tool mark is described as any impression, cut, gouge, or abrasion caused by a tool coming into contact with another object. The most common type of tool marks are those caused by metal coming into coming into contact with another metal surface. The marks left behind are called striations.

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In recent years, the forensic community has utilized polyvinylsiloxane impression materials for obtaining tool mark impressions. These materials have been utilized successfully by the dental profession. Advantages of the polyvinylsiloxane materials include ease of use, accuracy, and dimensional stability over time while disadvantages include cost of materials and slow setting times at lower temperatures.