Broken Back Seax vs Straight Back Seax: What’s the Difference?
The broken-back seax and straight back seax are two distinctive blade profiles found among historical and historically inspired seax designs. Both belong to a much broader family of single-edged blades associated with Germanic peoples of Northern Europe, but their spine geometry gives them noticeably different appearances.
Understanding these differences is useful when comparing modern Viking-style seaxes, especially because terms such as long seax, short seax, broad seax, broken back, and straight back can describe different aspects of a blade.
This guide explains the key differences, historical context, blade lengths, materials, and features to consider when choosing between these two seax profiles.
What Is a Seax?
A seax is a historical single-edged blade associated with Germanic peoples and found in different forms across Northern Europe.
There was no single universal design. Archaeological finds show considerable variation in blade length, width, point geometry, and construction. Different seax designs ranged from relatively compact blades to broad seax forms and much longer blades.
Some examples were practical fixed blade tools, while larger forms developed very different proportions.
This variation is important because terms describing a seax can refer to its size, shape, or historical classification rather than one standardized design.
What Is a Broken-Back Seax?
A broken-back seax is identified primarily by the angular change in its spine near the point.
When following the spine from the handle toward the tip, the upper edge changes direction noticeably rather than continuing in a single straight line. This creates the characteristic angular silhouette associated with the broken-back profile.
The word “broken” does not mean the blade is damaged. It simply describes this abrupt change in blade geometry.
Broken-back profiles are among the most recognizable seax forms, particularly for people interested in Anglo-Saxon and other early medieval blade styles.
A modern example is the Walnut Ravenlong™ Historical Seax, which combines an 18.3-inch 1040 carbon steel blade with a walnut handle, brass fittings, and the distinctive broken-back profile.
Common Broken-Back Seax Features
Although individual examples vary, a broken-back seax may feature a single cutting edge, relatively straight main section of spine, angular transition toward the point, and a clearly defined tip.
Modern historically inspired examples are often made from carbon steel and paired with natural handle materials such as walnut, bone, or horn.
Historical archaeological finds vary considerably, so the term should be understood primarily as a description of blade profile rather than an exact set of dimensions.
What Is a Straight Back Seax?
A straight back seax has a comparatively straight upper spine without the pronounced angular transition that defines a broken-back seax.
Depending on the individual design, the cutting edge may gradually rise toward the tip while the spine remains relatively straight. This creates a cleaner and less angular silhouette.
The Olivecrest Straightback™ Straight Back Seax is one example. It combines an 11-inch 1040 carbon steel blade with an olive wood handle, brass accents, and a hand-sewn leather scabbard.
Straight-back blades can appear simple at first glance, but differences in blade width, length, edge curvature, and handle construction create many different seax designs within this general profile.
Broken-Back Seax vs Straight Back Seax
The most obvious difference is the geometry of the spine.
| Feature | Broken-Back Seax | Straight Back Seax |
|---|---|---|
| Spine | Pronounced angular transition | Comparatively straight |
| Point | Angular, strongly defined profile | Smoother transition toward tip |
| Overall Look | Geometric and distinctive | Cleaner and simpler |
| Cutting Edge | Single edged | Single edged |
| Length | Can vary | Can vary |
| Modern Steel | Often carbon steel | Often carbon steel |
| Handle Materials | Wood, bone, horn and similar materials | Wood, bone, horn and similar materials |
Neither design is defined solely by length. A broken-back seax can be relatively compact or form part of the family of long seaxes, while straight-back examples can also appear in multiple sizes.
Long Seax, Short Seax and Blade Profile
One common source of confusion is treating blade length and blade profile as the same classification.
They are not necessarily the same.
A long seax refers primarily to a larger or longer seax form, whereas broken back and straight back describe characteristics of blade geometry.
For example, the Walnutcrest Shortseax™ Short Seax measures approximately 12.2 inches overall with a 7.8-inch blade. Its compact proportions distinguish it from much larger long seaxes.
By comparison, some long seaxes can carry blades approaching or exceeding 18 inches. The Ravenback Longcrest™ Viking Long Seax has an 18.3-inch blade and approximately 23-inch overall length.
This demonstrates why a long seax should not automatically be treated as another name for a broken-back seax. One term primarily concerns size, while the other concerns profile.
Historical terminology can be more complicated than modern product categories, but keeping size and blade shape separate makes modern seax comparisons much easier.
What Is a Broad Seax?
A broad seax refers to historical seax forms characterized in part by a comparatively broad blade.
Like short and long seaxes, it belongs to the wider discussion of how historical examples are classified by dimensions and blade characteristics.
It should not simply be treated as another name for a broken-back seax.
Historical seax classification is complex because surviving archaeological finds vary by region and period. Modern sellers and collectors may also use terminology somewhat differently, so blade measurements and photographs are often more informative than the product name alone.
Seax Blades in the Viking Age
Seaxes were used across parts of Northern Europe, including during the Viking Age, although they were not exclusive to Vikings.
The broader history of the seax includes Germanic cultures beyond Scandinavia, and surviving archaeological finds show multiple blade forms rather than one universal “Viking seax.”
Both compact blades and long seaxes existed in the wider historical development of the seax.
Some historical blades also involved more complex construction methods, including pattern-welded blades. Pattern welding joined different pieces of iron or steel through forging and was used in various early medieval weapons and tools. However, this does not mean every historical seax had a pattern-welded blade.
Modern seaxes may instead use a single modern carbon steel such as 1040.
Carbon Steel in Modern Seax Knives
Many modern historically inspired seaxes use carbon steel because it works well for traditional-style forged blades.
Several Arham Cutlery models use 1040 carbon steel, including both broken-back and straight-back profiles.
The Walnutforge Ravencrest™ Carbon Steel Seax, for example, uses an 11-inch 1040 carbon steel blade with a walnut handle and brass accents.
Steel type alone does not determine the quality or characteristics of a finished blade. Heat treatment, blade geometry, edge construction, and overall workmanship also matter.
Carbon steel does, however, require more attention to moisture than stainless steel.
Natural Handle Materials on Seaxes
Historically inspired seax knives often pair carbon steel with natural handle materials.
Walnut provides dark coloration and visible grain, making it a natural match for carbon steel and brass fittings.
Olive wood typically has warmer tones and prominent grain patterns.
Bone creates visual contrast and can be combined with wood. The Gotland Bonecrest™ Gotland Seax combines walnut and bone with a 12.5-inch carbon steel blade.
Horn is another traditional-looking option. Natural horn varies in coloration and pattern, giving individual handles their own appearance.
Because wood, horn, and bone are natural materials, some variation between individual pieces should be expected.
Which Seax Design Should You Choose?
Choose according to the characteristics that matter most to you rather than assuming one profile is universally better.
If you prefer a dramatic angular point and immediately recognizable silhouette, a broken-back seax may be the more appealing choice.
If you prefer a cleaner upper spine with a simpler profile, consider a straight back seax.
Blade length matters as well. A compact seax feels visually very different from a long seax, even when both are based on historically inspired designs.
Handle material can also influence your decision. Walnut, olive wood, bone, and horn each give the finished piece a different character.
Finally, consider the steel. Carbon steel is well suited to many handmade seax designs, but owners should be prepared to maintain it properly.
How to Care for a Carbon Steel Seax
Keep a carbon steel seax clean and dry.
After handling or use, wipe moisture and residue from the blade and dry it thoroughly. Applying a thin layer of suitable knife-safe oil can help protect exposed carbon steel from oxidation during storage.
Do not place a damp blade inside a leather scabbard. Leather can retain moisture, which is undesirable for carbon steel.
For longer storage periods, inspect and lightly oil the blade periodically rather than leaving it untouched in the scabbard.
Frequently Asked Questions
What is the main difference between a broken-back seax and a straight back seax?
The main difference is the spine geometry. A broken-back seax has a pronounced angular transition toward the point, while a straight back seax maintains a comparatively straight upper profile.
Did Vikings use seax knives?
Yes, seaxes were present in parts of Northern Europe during the Viking Age. However, seaxes were not exclusive to Vikings and were associated with a wider range of Germanic peoples and historical periods.
Is a broken-back seax the same as a long seax?
No. A broken-back seax is identified primarily by blade profile, while a long seax is distinguished primarily by its larger proportions. Some long seaxes can have broken-back profiles, but the terms are not interchangeable.
What is a broad seax?
Broad seax is a term used for historical seax forms characterized partly by their wider blades. It belongs to the broader classification of seax types and should not automatically be treated as another term for a broken-back or straight-back seax.
Which is better: a broken-back seax or straight back seax?
Neither profile is universally better. A broken-back design offers a more angular silhouette, while a straight-back design has a cleaner spine. Blade length, steel, handle material, historical inspiration, and personal preference should all be considered.
Final Thoughts
The key difference between a broken-back seax and straight back seax is the shape of the blade's spine.
Broken-back designs have a pronounced angular transition toward the point, while straight-back designs maintain a comparatively straight upper profile.
But seax terminology extends beyond those two shapes. Short seaxes, long seaxes, broad seax forms, and other historical classifications demonstrate how varied these single-edged blades became across different regions and periods.
When comparing a modern seax, look beyond the name. Examine the blade profile, overall dimensions, steel, handle materials, fittings, and historical inspiration.
Doing so makes it much easier to understand the differences between seax designs and choose the style that best matches what you are looking for.