collapse collapse

* Links

* Forum Menu

* User Info

 
 
Welcome, Guest. Please login or register.

* Who's Online

  • Dot Guests: 46
  • Dot Hidden: 0
  • Dot Users: 0

There aren't any users online.

* Board Stats

  • stats Total Members: 2179
  • stats Total Posts: 78471
  • stats Total Topics: 13500
  • stats Total Categories: 5
  • stats Total Boards: 62
  • stats Most Online: 721

* Search



Author Topic: Toolmarks on 3D printed pistol frame  (Read 293 times)

0 Members and 1 Guest are viewing this topic.

Offline kgarrison

  • Posts: 24
  • Gender: Male
    • San Bernardino County Sheriff's Department - SID website
Toolmarks on 3D printed pistol frame
« on: June 21, 2022, 03:44:04 PM »
Inspired by the recent 2022 AFTE presentation: Identification of Toolmarks Present on Additive Manufactured Components
By Corey Scott

I looked for some of these markings on a 3D printed pistol frame I received in casework. This photo is from two casts I took of the bottom of the trigger guard. I phased on a start/stop mark on the far side of the casts, then shifted the left cast over a few layers to see if the marks repeated with the photo'd results. Toward the left of the frame you can see the semi-circular marks which I'm assuming is from the nozzle as it starts to extrude the layers of the curved trigger guard.

Also attached is a photo of the trigger guard area. You can see several of the donut shaped start/stop areas from the nozzle in this photo.
« Last Edit: June 22, 2022, 10:15:50 AM by Wendy Gibson »
Kirk Garrison
Firearms and Toolmarks
San Bernardino County Sheriff's Dept.
Scientific Investigations Division
kgarrison@sbcsd.org

 

Countdown Clock

* Recent Posts

* Headstamp Guide

SimplePortal 2.3.5 © 2008-2012, SimplePortal