When should casting of a tool mark occur?

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Multiple Choice

When should casting of a tool mark occur?

Explanation:
Casting a tool mark is used to preserve a unique impression when you cannot recover the mark directly. The imprint carries distinctive features—striations and edge details—that let examiners compare it to a suspect tool, but if the tool mark itself can’t be collected or would be destroyed by attempting collection, a cast provides a durable, analysable record for later study. If the mark is accessible and collectible, you would capture and preserve it through direct collection rather than casting. Casting serves as a backup method to avoid losing the evidence when direct collection isn’t possible.

Casting a tool mark is used to preserve a unique impression when you cannot recover the mark directly. The imprint carries distinctive features—striations and edge details—that let examiners compare it to a suspect tool, but if the tool mark itself can’t be collected or would be destroyed by attempting collection, a cast provides a durable, analysable record for later study. If the mark is accessible and collectible, you would capture and preserve it through direct collection rather than casting. Casting serves as a backup method to avoid losing the evidence when direct collection isn’t possible.

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