Toolmarks made by lathe chuck jaws

Nir Finkelstein; Ayal Aronson; Tsadok Tsach

doi:10.1016/j.forsciint.2017.03.004

Toolmarks made by lathe chuck jaws

Forensic Sci Int. 2017 Jun:275:124-127. doi: 10.1016/j.forsciint.2017.03.004. Epub 2017 Mar 18.

Authors

Nir Finkelstein¹, Ayal Aronson², Tsadok Tsach¹

Affiliations

¹ Toolmarks and Materials Laboratory, Division of Identification and Forensic Science, Israel Police Headquarters, Jerusalem, Israel.
² Toolmarks and Materials Laboratory, Division of Identification and Forensic Science, Israel Police Headquarters, Jerusalem, Israel. Electronic address: ayal.aro@gmail.com.

PMID: 28363159
DOI: 10.1016/j.forsciint.2017.03.004

Abstract

This paper presents a forensic method to evidentially tie a workpiece with a specific lathe. Examining using this method can prove or exclude a connection between the two. The importance of this method is mostly due to the growing trend among lawbreakers of manufacturing improvised firearm parts using machining processes. This method is based on comparing jaw impressions made by the chuck on a workpiece.

Keywords: Chuck; Forensic science; Improvised firearm; Machining; Manufacturing toolmarks.

MeSH terms

Construction Industry / instrumentation*
Crime
Forensic Ballistics / methods*
Humans
Manufacturing and Industrial Facilities
Metals*
Microscopy
Weapons*

Substances

Metals