Forensic Evidence Lifting Techniques

Sergeant Mike McCutcheon introduces the process of preserving tool mark evidence, which is crucial in forensic investigations, especially in burglary cases. He demonstrates two methods: using Microsil and Accu Trans. Microsil involves mixing a hardener and base, applying it to the evidence, and waiting for it to dry. Accu Trans, similar to a caulking gun, is self-mixing and easier to use. Both methods are compared for effectiveness in capturing tool mark details. The video emphasizes the importance of collecting and preserving evidence for lab analysis and potential convictions.

What is the primary focus of the forensic education session led by Sergeant Mike McCutcheon?

• Preserving digital evidence

• Lifting tool mark or impression evidence

• Analyzing DNA samples

• Interviewing witnesses

What are the two components of Microsil used in the evidence lifting process?

• Powder and liquid

• Resin and catalyst

• Hardener and Microsil

• Base and activator

What is a drawback of using Microsil for lifting impressions?

• It cannot be used on wood surfaces

• It is messy and requires a mixing surface

• It requires special storage conditions

• It is too expensive

How does Accu Trans differ from Microsil in terms of application?

• Accu Trans requires heating before use

• Accu Trans uses a self-mixing tip

• Accu Trans is only available in clear color

• Accu Trans is applied with a brush

What additional use does Accu Trans have besides lifting tool marks?

• Lifting fingerprints

• Analyzing blood samples

• Recording audio evidence

• Capturing video footage

What is the main advantage of using Accu Trans over Microsil?

• It is faster to dry

• It is less messy and easier to use

• It is more affordable

• It provides more detailed impressions

What is the purpose of comparing the lifted impressions to the known tool marks?

• To identify the manufacturer of the tool

• To verify the accuracy of the impression

• To determine the age of the tool

• To assess the condition of the tool

What should be done before lifting tool mark impressions at a crime scene?

• Take a photograph with a scale

• Apply a protective coating

• Measure the depth of the impression

• Clean the surface thoroughly

Why is it important to properly store lifted impressions?

• To make them easier to transport

• To maintain their integrity for lab analysis

• To ensure they are not tampered with

• To prevent them from fading

Where can you purchase the products demonstrated in the video?

• EvidenceSupplies.org

• CrimeSceneStore.net

• ForensicTools.com

• Lynn Peavy Company