Civivi Synergy3 Black G10/Twill Carbon Fiber, Black Hand Rubbed Damascus by Jim O'Young (C20075B-DS1)
- Synergy3 Black G10 / Twill Carbon Fiber, Black Hand Rubbed Damascus the result of a collaboration with American knifemaker, Jim O'Young. An easy-to-carry, sturdy EDC folding knife with a durable, wide blade designed for heavy use.

This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Synergy3 Black G10 / Twill Carbon Fiber, Black Hand Rubbed Damascus the result of a collaboration with American knifemaker,Jim O'Young. An easy-to-carry, sturdy EDC folding knife with a durable, wide blade designed for heavy use.
Jim O'Young - after a 20-year career as a mechanical design engineer in the electronics industry in Silicon Valley, Jim began to pursue his passions: sport shooting and the design and manufacture of innovative small arms and knives. Jim applied his knowledge and experience to the SpeedTech Synergy project using SolidWorks, a state-of-the-art CAD tool for 3D solid modeling. It was the first knife created using this technology and featured several design elements that had never before been used in a serial folder: an ergonomic, fully 3D digitally sculpted handle surface made from a single solid block of material, a floating bearing system and a button lock with enhanced interlocking geometry. Synergy was ahead of its time and was awarded Most Innovative American Designat the 1999 Blade Show.
Damascus - Damascus stainless steel blade with a unique pattern. Finished using the Black Hand Rubbed, hand rubbed damascus method. The blade consisting of two different types of steel, forged and put together in different ways obtaining this amazing pattern. It is characterized by high hardness in the range of 58-60 HRC.
Nested Liner Lock, a modification of the liner-lock by nesting the liner of the locking mechanism in the grip.
Blade - Tanto type , finished by hand using Black Hand Rubbed method. The generous belly extends the length of the cutting edge in relation to the length of the blade converging towards the needle-sharp tip of the knife. Thethickness of the blade provides high strength while the high, flat grind gives excellent cutting edge geometry and extreme cutting performance. Ball bearing ceramic supports the opening of the blade with a quick flipper flipper (index-finger flipper). When opened, the flipper forms a mini-guard to prevent the hand from slipping on the blade. The whole thing is locked with a modern Nested Liner Lock.
Handle - grips made of black G10 and Twill Carbon Fiber, with a beautiful pattern of concentrically spreading circles. Chamfered edges of the covers eliminate sharp edges for comfort and improve grip confidence. The backspacer is made of the same material as the Handle grips. The pivot is decorated with a stylized Civivi brand logo . A single-position, right-side deep carry clip allows you to carry the knife discreetly in your pocket in tip-up position (blade tip up).
Case - included zippered soft nylon case with the manufacturer's logo for safe storage and transportation of the folder.
Technical data:
Product number: C20075B-DS1
Product name: Synergy3 Black G10 / Twill Carbon Fiber, Black Hand Rubbed Damascus
Overall length: 194.9 mm / 7.67"
Blade length: 82.4 mm / 3.24"
Blade thickness: 3.0 mm / 0.12"
Handle length: 112.5 mm / 4.43"
Handle thickness: 14.4 mm / 0.57"
Weight: 95.1 g / 3.35 oz
Blade material: Damascus
Blade hardness: 59-61 HRC
Blade grind: Flat
Blade finish: Black Hand Rubbed
Handle material: G10 / Twill Carbon Fiber.
Handle finish color: Black
Backspacer material: G10
Backspacer color: Black
Clip: Right, Tip-Up
Clip material: Stainless Steel
Pivot mechanism: Caged Ceramic Ball Bearing.
Locking mechanism: Nested Liner Lock
Opening method: Manual, flipper
Additional accessories: Pouch
Designer: Jim O'Young
Brand: Civivi
Manufacturer: We Knife Co. Ltd.
Country of origin: P.R.C.
Developed by: the Sharg® company.