Shoe Print Casting
Learn how to cast footwear and tire impressions in soil, sand, snow and other substrates using dental stone, sulfur and other materials. Follow the procedures, equipment and requirements outlined in this guide for forensic evidence collection. Level up your crime scene investigation skills with this simple tutorialIt is sometimes necessary at a crime scene to make a cast of footwear or tire mark impression in soil.
Plaster of Paris can be used to make a quick. Learn how to properly cast footwear impression evidence. NFA Instructor Brian Cochran guides you through preparing and casting of footwear evidence.
Conducted a shoe impression casting practical through Zoom today ...
Learn how to collect, preserve and analyze shoe prints at a crime scene. This web page explains the steps, tools and techniques involved in shoe print casting, with diagrams and examples. In the past the choices for recording actual shoe print evidence to compare against lifted impressions have been limited.
Two of the more popular methods involved rolling fi ngerprint ink on the sole of the shoe and transferring it to paper or applying black fi ngerprint powder to the sole, and then transferring it to an adhesive. By identifying a particular mold, the footwear examiner may conclude that the questioned footwear impression corresponds in design, physical size, and mold characteristics with the known shoe, thus reducing the potential population of shoes of this design and size that could have made the impression. To package shoe impressions in casting material for evidence, place the cast in a sturdy box with the impression side up.
Casting & Footwear | EVIDENT
Secure it with tape. Do not roll an electrostatic dust lift. Ensure the casts dry for at least 24 hours before packaging to maintain their integrity.
The process begins by carefully cleaning the area around the shoe print. Investigators then select a suitable casting. Master the procedure of footwear impression casting.
Casting plastic impressions
Learn essential steps, materials, and techniques for accurate and reliable forensic evidence collection. 4.1 Footwear and tire impression evidence may have inherent limitations that can interfere with the procedures in this Guide. Limitations, when known, should be noted and recorded.
4.2 Limitations can be due to substrate features, environmental conditions, quality and quantity of original impressions, casting techniques and casting materials. Shoe and Tire Impressions Activity Summary Students will cast a shoe print impression using Plaster of Paris of at least one shoe using proper casting techniques. The following lab period students will clean and match their shoe print impression casting to possible shoes.
Students will also match tire track prints that they make with a tire track reference sheet using unique characteristics.
