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why do knives have a bolster

Why Do Knives Have a Bolster? All Answers You Should Know

You can find various types of knives on the market, whether a chef or a santoku knife. No matter the knife type, most knives integrate a bolster as part of their anatomy. However, most knife users don’t know the answer to “why do knives have a bolster?”

Playing an important part of your knife, a bolster comes with several benefits, including enhancing the knife’s performance. I’ve compiled a detailed guide to everything there is to know about a knife bolster, including its quirky benefits.

What Is a Knife Bolster?

A knife bolster forms part of the knife’s anatomy, positioned between the handle and blade. This thick junction helps to promote a smoother transition from the blade to the handle. It is important, however, to note that not every knife will have a bolster.

What Is the Purpose of a Bolster on a Knife?

What Is the Purpose of a Bolster on a Knife

A knife bolster comes with a wide selection of uses. These include enhancing the knife’s safety and functionality.

I’ve outlined the key purposes of a knife bolster in detail below;

Adds Beauty

Primarily, a bolster adds beauty to your knife. As mentioned before, it creates a smooth transition from the blade to the handle, giving the knife a more uniform look.

Furthermore, different knife makers integrate varying bolster designs, thickness, and choice of materials. Combined, they help to give a unique, aesthetically pleasing look.

Adds Additional Grip

Due to its design, a bolster enhances the grip of your knife through balance. It also promotes a better grip for the hands, preventing them from slipping from the handle to the blade and cutting you.

Therefore, when you hold on to the knife blade, you will enjoy a better grip than holding on to the handle alone.

Protects the Handle

The knife bolster adds an extra sealing to the knife, which holds the handle in place and prevents it from snapping. It does a particularly excellent job for a full tang knife as it helps to further bound the blade and handle.

Prevent Fingers From Slipping

Having a bolster on your knife allows it to be much more forgiving on the hands and fingers. The position of the bolster also prevents your fingers from slipping over to the blade and thus, decreasing the risks of injuries.

Provides a Counterbalancing Point

In addition to improving the knife’s safety, balance is perhaps another key feature of a knife bolster.

Using a knife that integrates a bolster gives you better balance and control. This is how it works – typically, the handle is usually lighter than the blade.

Now, imagine the knife as a seesaw with the blade as an input force, the handle as the output force, and the bolster as the fulcrum. With the bolster in the middle, you are guaranteed the perfect counterbalance and control of the knife.

Do All Knives Have a Bolster?

Not all knives have a bolster. Typically, you will find a bolster on single-piece forged, full tang, and professional culinary knives than on these with stamped blades.

However, this may not always be the case. Additionally, traditional Japanese knives lack bolsters although you can find more modern hybrid options (blend of Japanese and western-style knives) that feature bolsters.

Also Read: Does Knife Length Include the Handle?

Is It Safe to Use a Knife With Bolster?

It is definitely safe to use a kitchen knife with a bolster. After all, a safety bolster enhances hand and finger protection.

Consider cutting tasks that pose the risks of your finger slipping, like filleting, boning, or cutting large food items. Using a knife with an integrated bolster offers the extra grip and balance needed to ensure these tasks remain safe.

Types of Knife Bolsters

Types of Knife Bolsters
The picture shows how many different types of knife bolsters are available

Here are the main distinctions between a full bolster and half bolster knife;

Full Bolster

A full bolster knife refers to a knife that integrates a safety bolster and finger guard. Typically, to achieve this design, the bolster extends to the bottom of the blade to create the finger guard.

A full bolster also creates a different cutting angle than a semi/half bolster since the additional coverage adds weight to a full bolster knife.

In turn, this design gives the handle more balance and requires somewhat more force compared to a half-bolster knife.

Half Bolster

A half bolster doesn’t extend to the bottom of the blade, making half-bolster knives much lighter than full ones. Instead, semi-design easily transitions the blade into the handle.

This design also makes the sharpening process easier. A half bolster gives you better freedom of maneuverability since the balance is a little directed towards the blade and the half bolster design gives it a much lighter and smaller profile.

Advantages and Disadvantages of Full Bolster

Here are the pros and cons of a full bolster culinary knife;


  • Integrates a bolster and finger guard for better finger protection
  • Beginner-friendly


  • Heavier
  • Harder to sharpen

Advantages and Disadvantages of Half Bolster

Here are the pros and cons of a half-bolster knife;


  • Easier to sharpen
  • Much lighter to handle
  • Improved grip
  • Better knife handling freedom
  • Comfortable to use for delicate cutting tasks


  • Lacks a finger guard

Why Do Some Knives Not Have a Bolster?

Generally, knives built for delicate and fine cutting tasks where you don’t have to exert much pressure do not have a bolster.

This is because their tasks focus more on maneuverability rather than having to put much pressure. So, they remain safe on the fingers and hands even without the bolsters.

Also Read: A Brief Guide on How Big Should a Chef’s Knife Be?


Undoubtedly, a bolster on your knife goes a long way to enhance its functionality, whether it’s the safety or comfort you are looking for.

Nonetheless, the answer to why do knives have a bolster ultimately varies with the knife user. After all, every cook is different and has their own needs.

For some, the safety a bolster offers is crucial while others don’t depend much on it due to the level of skill and comfort (in using the knife) they have achieved. But, as a beginner, you are better off using a knife built with a bolster.

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