: Black x


: DLC x

  • DLC

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The CK-3 is a fixed blade, utility edc capable of overcoming the toughest environments and obstacles. Refined rather than radical, the CK-3 is the latest iteration of Caswell’s original CK-1. The CK-1 was Caswell’s first fixed blade design and it was tested, and evaluated by the FBI. The parameters for the knife were simple; to build a compact fixed blade that was utilitarian by design, and made zero use of jimping on the spine and blade with a simple Kydex sheath that was discreet enough to be carried in a waistband.

The CK-1 delivered on the needs of the FBI and the latest iteration, the CK-3, continues to refine the design of the CK-1. The blade is a wide, full-height flat ground modified sheepsfoot with a thin fine edge. The handle of the CK-3 is a highly textured black G10 that is permanently affixed to the blade without any pins or screws. The shape of the CK-3 handle is remarkable in that Caswell has managed to make a very minimal handle very comfortable and secure in the hand.

As Joe Caswell describes it, the CK-3 “is a no-nonsense and hardcore cutting tool.”

  • Utilitarian fixed blade knife designed for strong use and every day carry.
  • PVD, tungsten diamond like coating (DLC) on the CPM 3V blade by Peters’ Heat Treat.
  • Textured G10 handle scales with signature Triple Aught Design three fullers.
Behind the Scenes with Caswell Knives

Joe Caswell has been making knives and pattern welding steel since 1995. A specialty of Caswell is historic designs associated with early medieval and Viking swords. Another passion of Joe’s is designing and inventing machines and mechanisms that has translated well into his knifemaking. Caswell designs have an appearance and style unlike anything else.

By placing an order with Triple Aught Design, you are verifying that you are over 18 years of age and are aware of all local, state and federal laws regarding the possession of, or the carrying of this product. Triple Aught Design shall be held blameless for any infraction of laws made by the purchaser.


  • Blade: CPM-3V Tool Steel
  • Handle / Scales: Milled G10
  • Overall Length: 8.20” (20.82 cm)
  • Blade Length: 3.75” (9.52 cm)
  • Handle Length: 4.45” (11.30 cm)
  • Width of Handle: .579" (1.47 cm)
  • Without Sheath: 6.50 ounces (184.27 grams)
  • With Sheath: 9.00 ounces (255.14 grams)
  • CPM 3V Tool Steel Blade
  • Full-height Flat Ground
  • Modified Sheepsfoot Profile
  • PVD, Tungsten Diamond Like Coating (DLC)
  • Milled G10 Handle
  • Tek-Lok Compatible Kydex Sheath
  • Lanyard Hole
Labels & Logos  
  • Triple Aught Design & Caswell Knives Logos Laser Etched on Blade

Made in USA