Analysis of Class Characteristics of Reciprocating Saws

Journal of Forensic Sciences
Jacqueline M BergerTara L Moore

Abstract

Criminal dismemberment is accomplished using a variety of tools and frequently used to dispose or facilitate the transport of human remains in an attempt to hinder forensic investigation. The present research examined features that may differentiate cuts made in bone by various commercially available reciprocating saw blades. The partial limbs of adult white-tailed deer (Odocoileus virginianus) were used as a proxy for human remains and were cut using five reciprocating saw blades and a hand-powered hacksaw. The resulting false start and complete kerfs were examined macroscopically and microscopically. Kerf characteristics in which significant differences (p ≤ 0.05) between reciprocating blades were noted including minimum kerf width, kerf false start shape, presence of cut surface drift and harmonics, exit chipping size, and striation regularity. Interblade differences generally reflect class characteristics previously established for hand-powered blades. The present research may aid in the identification of reciprocating saw use in forensic contexts.

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Citations

Sep 22, 2020·Journal of Forensic Sciences·Melissa MenschelGary Reinecke
Jan 23, 2020·International Journal of Legal Medicine·Caroline BernardiGérald Quatrehomme
Jan 2, 2021·Forensic Science International : Synergy·Martin Baiker-SørensenRichard Visser
May 25, 2021·Forensic Science International : Synergy·Caroline BernardiGérald Quatrehomme

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