CHESAPEAKE BAY DIVISION - IAI
  • Home
  • About Us
  • Membership
  • Conferences
  • Seminars
  • Webinars
  • Students
  • Resources
  • Vendors
  • Job Opportunities/Training
  • Interactive Chemical Reagent Program
  • ACE-V Methodology

Gun Bluing

Back to Start

Development Color:
Picture
Vertical Divider
Method to Record:
Picture
Vertical Divider
Hazard:
Picture
Vertical Divider
Protective Clothing: 
Picture
Vertical Divider
 Fume Hood Use:
Picture

Formula
Procedure of Application
Development Complete When
Source of Error
Incompatibilities
Precautions
Storage Container
Safety
Recommendations
Formula
Formula 44/40 (Instant Gun Blue):
1 part reagent to 80 parts distilled water

Outer's Gun Blue:
1 part reagent to 40 parts distilled water
​





​
Procedure of Application
  1. Briefly fume cartridges with cyanoacrylate ester.
  2. Immerse cartridges in Gun Blue reagent.
  3. Monitor for development.
  4. Halt development by immersing in distilled water.





​
​
Development Complete When
The development of black ridge detail occurs rapidly once the development process begins.

​

​
​
​
​


​
Source of Error
Cartridges must be made of nickle or brass metals.

Cartridges must be fumed with cyanoacrylate ester prior to immersion into gun bluing.

​
​

​
​

​
Incompatibilities
Reagent does not work on lacquered steel cartridges.







​
​
​
​
Precautions
Watch for over development.  Ridge detail develops quickly once the reaction begins.

The development may interfere with breech face markings necessary for firearms examinations.
​
​

​


​
Storage Container
Made fresh with each application.
​

​





​
​



​
Safety
Fume hood use is required.
​

​


​
​



​
Recommendations
Be sure to continuously monitor the cartridges for development of ridge detail. Remove from reagent once development is visible.






​

​
Vertical Divider
Chemical Name
Gun Bluing
​Surface Used On
Brass or Nickel Cartridge Surfaces
​
Sensitive To
Eccrine/Sebaceous Components
​
Vertical Divider
Ridge Detail Visualized by:
Visible chemical/stain reaction​

​​Reagent Applicabilities:
Porous Surfaces
Non-Porous Surfaces
Cartridges Surfaces

Other Chemical Name(s):

Brass Black metal Touch Up BB2
Formula 44/40 Instant Gun Blue
Gunslick Gun Blue
Perma Blue Liquid Gun Blue PB 22
Super Blue Extra Strength


Process Summary:
A number of gun bluing products sold under various trade names are used in a diluted solution to develop ridge detail on cartridge surfaces. Cartridges are first fumed with cyanoacrylate ester, then immersed into the gun bluing solution. 

Accepted Deviations:
Several gun bluing products sold under various trade names may be utilized. ​

Supporting Reference Materials:
  1. Minutiae Magazine, Issue No. 32, Sept.-Oct. 1995, pg. 1.

Address
Chesapeake Bay Division - International Association for Identification   

P.O. Box 71804, 
Henrico, VA 23255
Email
cbdiaisec@gmail.com
Technical Problems
Problem with website?

Please contact:
Da-il Kim, Webmaster
cbdiaiwebm@gmail.com
Social
Copyright © Company. All Rights Reserved.
  • Home
  • About Us
  • Membership
  • Conferences
  • Seminars
  • Webinars
  • Students
  • Resources
  • Vendors
  • Job Opportunities/Training
  • Interactive Chemical Reagent Program
  • ACE-V Methodology