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The tang of a sword—also called soul—is the portion of the blade that extends into the handle and largely determines the strength, balance, and safety of the weapon. Understanding the differences between full tang and half tang helps you choose the right build based on use: functional combat, training, or collection.
What is spike and why does it matter?
The tang is the metal piece that connects the blade to the pommel by passing through the handle. Its design directly influences:
- Structural strength: prevents the blade from separating from the handle under load.
- Balance: the weight of the steel in the handle modifies the balance point and maneuverability.
- Force transmission: determines how impacts and torques are distributed along the bar.
A poorly designed tang can cause catastrophic failures under rigorous use.
Full tang
Definition
On a full tang the steel blade retains the same width and thickness from tip to knob. The handle scales are attached to both sides of that metal bar, creating a solid and visible joint on the sides of the handle.
Advantages
- Maximum robustness: the force is transmitted along the entire length of the steel, reducing points of failure.
- Better balance and control: The additional weight in the grip places the center of gravity closer to the hand, facilitating quick movements and precision.
- Greater durability in functional use: ideal for combat, survival and demanding tests.
- Easy repair: parts such as bolts or pins can be replaced without affecting the tang.
Disadvantages
- Weight: tends to be heavier than builds with less steel in the grip.
- Aesthetics: Some designs prefer a smooth, thinner grip which full tang does not always allow.
Half herringbone
Definition
The half tang extends only partly or partially into the handle; Seen in top section, the tang reaches about half the thickness of the handle or less. It is an intermediate solution between the full tang and the lace (stick tenon).
Advantages
- Weight reduction: Less steel in the grip improves maneuverability for certain users.
- Compromise between resistance and lightness: more robust than a lace but less solid than a full tang.
- Greater aesthetic variety: allows for slimmer or more ergonomic handle designs.
Limitations
- Lower absolute strength: under extreme impacts or intense twisting may fail sooner than a full tang.
- Maintenance and repair: in some cases the internal fixation is more complex and less accessible.
Practical comparison: when to choose each
- For intense use and maximum confidence: full tang. Recommended for recreated historical combat, functional testing and survival tools.
- For light training, recreational use or ergonomic priorities: half tenon may be appropriate, always considering the type of effort anticipated.
- For collection or display: both types are valid; The choice will depend on historical fidelity and the aesthetics sought.
How to inspect the tang before use
- Check that there are no cracks in the joint between handle and guard.
- Check the pins or rivets: that they are firm and without play.
- Assess the balance point by holding the sword with one finger under the guard; must match the intended use.
- If possible, learn about heat treatment of steel: properly quenched and tempered increases reliability.
Myths and clarifications
- Not every complete tang is automatically perfect: design, steel quality and tempering are equally important.
- A well-designed half tenon can perform admirably in moderate use.
- The appearance of the handle does not always reveal the internal quality; fabricator/smith inspection and documentation help confirm construction.
| Appearance | Full tang | Half spike |
|---|---|---|
| Structural strength | Maximum, excellent for demanding use | Good, suitable for moderate use |
| Weight | Major | Minor |
| Balance | Center of gravity closest to hand | Balance more towards the blade |
| Ideal applications | Combat, survival, functional use | Training, recreational use, ergonomic designs |
| Ease of repair | High | Variable |

Practical Tip: If the priority is safety and reliability under difficult conditions, prioritize constructions that integrate a robust tang and good heat treatment. If you are looking for lightness and maneuverability for training or recreational use, the half tang can offer a useful balance as long as the piece is well manufactured.
You can explore pieces related to this topic in the collections of functional swords and knives.