Can Lego Break? Exploring the Intricate World of Lego Durability


Lego bricks are the epitome of durability and playability. These colorful plastic blocks have ignited the imagination of millions, young and old alike.

However, even the sturdiest creations can meet their match in the form of wear and tear.

In this blog post, we'll dive into the world of Lego damage and explore the various types of Lego breaks.

Can Lego Break?

"Yes," Lego bricks can break. Even these seemingly indestructible bricks can suffer wear and tear over time. Just like any other toy, they can break if mishandled, subjected to excessive stress, or not handled with care.

History of Lego Brick Breakage

Lego bricks have been around for over 90 years, and during that time, they have broken on countless occasions. In the early days of Lego, bricks were made of a more brittle material than they are today, making them more susceptible to breakage.

Additionally, the early Lego sets were not as well-designed as today's sets, which often led to structural weaknesses that could cause breakage.

In some instances, there are pieces which had issues like the brown and dark red bricks. Over time, Lego has made significant strides in improving the durability of its bricks.

The company has switched to a stronger plastic material, and it has also improved the design of its sets to make them less likely to break. As a result, Lego bricks are now more durable than ever before.

What Are Lego Bricks Made Of?

To understand the strength of Lego, we first need to know what these bricks are made of.

Lego bricks are primarily composed of a high-quality, durable plastic called acrylonitrile butadiene styrene (ABS).

This material is known for its toughness, resistance to impact, and durability, making it the perfect choice for withstanding the trials of playtime.

How Strong Are Lego Bricks?

Lego bricks are very strong, but they can be broken if enough force is applied.

The exact amount of force required to break a Lego brick will vary depending on the type of brick, its age, and how it is being stressed. Lego bricks can withstand a given pressure and impact before they break.

In some studies, Lego bricks can support a surprising amount of weight relative to its size. In a single 2x2 Lego brick, it can withstand the weight of about 953 pounds (roughly 432 kilograms) before it starts to deform and break.

This strength is one of the reasons why Lego is a popular choice for building intricate, large-scale creations.

Are Lego Bricks Designed to Withstand Stress

Lego design their bricks meticulously, and they engineer them for maximum durability.

The key to their strength lies in their ingenious design, featuring a series of interlocking studs and tubes that create a firm connection.

This not only makes the bricks stable but also allows for countless combinations and intricate structures.

The precision in the design ensures that the bricks can withstand a remarkable amount of stress without losing their form.

Causes of Lego Bricks to Break

While Lego bricks are incredibly durable, they are not unbreakable. There are a number of factors that can cause Lego bricks to break, including:

  • Dropping from a height, especially onto a hard surface
  • Stepping on bricks can also cause them to break
  • Bending too far can cause Lego bricks to break.
  • Twisting too far can also cause breakage
  • Exposing to sunlight can make them brittle and more easily broken.
  • Exposing to extreme temperatures, either hot or cold, can also make them brittle and likely to break.
  • Aging over time can weaken the plastic, making it more prone to breakage.
  • Rough play, repeatedly applying force on Lego structures can eventually cause them to break or warp.
  • Chemical exposure on types of adhesives or solvents can weaken the ABS plastic and lead to breakage.

Types of Lego Breaks

While Lego bricks are made of durable ABS plastic, they can still be damaged if subjected to excessive force or stress. The most common types of Lego breaks are:

Cracks - These are thin, hairline fractures that may not be immediately visible. However, cracks can weaken a Lego brick and make it more likely to break completely under pressure.

Splits - These are larger cracks that extend through the entire thickness of a Lego brick. Splits can be caused by dropping a brick from a height or stepping on it.

Chips - These are small pieces of plastic that break off from the corners or edges of a Lego brick. Chips are often caused by mishandling or rough play.

Fractures - These are deep cracks that can weaken a Lego brick to the point of failure. Fractures are often caused by applying too much force to a brick, such as when trying to force two bricks together that are not compatible.

Shatters - These are the most severe type of Lego break. Shatters occur when a Lego brick is subjected to extreme force, such as being hit with a hammer or crushed under a heavy object.

How To Prevent Lego Bricks from Breaking

There are a few things you can do to help prevent your Lego bricks from breaking:

Avoid dropping Lego bricks from a height. If you do drop a Lego brick, try to catch it before it hits the ground.

Be careful not to step on Lego bricks. If you can't avoid stepping on a Lego brick, try to step on it lightly.

Avoid bending or twisting Lego bricks too far. If you need to bend or twist a Lego brick, do so carefully and slowly.

Keep Lego bricks out of direct sunlight. If you have to store Lego bricks outside, be sure to keep them in a shaded area.

Avoid exposing Lego bricks to extreme temperatures. If you live in a climate with extreme temperatures, be sure to store your Lego bricks in a temperature-controlled environment.

Use a Lego storage box with drawers. This will help to protect your Lego bricks from dust and dirt, and it will also make it easier to sort and organize your bricks.

Build a Lego display case. This is a great way to display your Lego creations and protect them from damage at the same time.

Use Lego reinforcement pieces. Lego sells a variety of reinforcement pieces, such as beams and plates, that can be used to strengthen your Lego creations.

Be careful when dismantling Lego creations. If you are dismantling a Lego creation, be careful not to bend or twist the bricks too far.

Store your Lego bricks in a cool, dry place. Avoid storing them in direct sunlight or in humid conditions.

Clean your Lego bricks regularly using a mild soap and water solution. Avoid using harsh chemicals or abrasive cleaners.

How to Build Lego Models That Are Strong and Durable

To construct Lego models that stand the test of time, consider the following tips:

Use a variety of brick shapes and sizes - This will help to distribute the weight of the model more evenly and make it less likely to collapse.

Interlock the bricks tightly - This will help to create a strong and stable structure.

Avoid using too many small bricks - Small bricks are more likely to break than larger bricks.

Proper assembly - Ensure that all pieces are correctly connected, and there is no unnecessary stress on any single brick.

Distribution of weight - Distribute weight evenly across your creation to prevent structural weaknesses.

Reinforcements - Incorporate strong, supportive structures within your models, such as beams or columns, to add stability.

High-quality bricks - Invest in high-quality authentic Lego bricks, which are more durable and less likely to break.

Protecting your creations - If your Lego creations are on display, consider encasing them in display cases or shelves to shield them from dust and potential damage.

While Lego bricks are incredibly durable, they can break under certain conditions and play styles.

However, with careful consideration of design, materials, and storage, you can maximize the lifespan of your Lego creations and continue to enjoy the endless possibilities they offer.

FAQs on Lego Durability


What is the lifespan of a Lego brick?

Lego bricks are built to last. The official estimate from the Lego Group is that their bricks can withstand 36,000 connect-disconnect cycles. This means that if you assembled and disassembled your Lego creations every day, they could last for nearly 100 years! The durability of Lego bricks is a testament to their high-quality construction.

Does Lego decompose?

Legos do not decompose. They are made from ABS plastic, which is a durable and long-lasting material. This means that Legos can persist in the environment for hundreds of years.

How long does LEGO last?

LEGO bricks has no limit on how long it last as it never wither away. However, as far as “being overuse", there is a limit based on experiment by Phillipe Cantin. Using a pair of 3X3 Lego bricks, he found that connecting together and disconnecting for 37,112 times, the Lego bricks got damaged.

How to repair common Lego brick breaks?

There are a number of ways to repair common Lego brick breaks. One simple way is to use glue specifically designed for plastic. Use only small amount, as too much glue can mar the appearance of the brick.

Another way to repair Lego brick breaks is to use a soldering iron. This is a more advanced method, but it can be used to repair more serious breaks.


Lego bricks are not just playthings; they are marvels of engineering and design. They can withstand impressive amounts of pressure, last for generations, and have a minimal impact on the environment when disposed of responsibly.

By learning about the science behind Lego's durability and following safety guidelines, you can enjoy these timeless toys for years to come.

So, go ahead, let your creativity flow and build without fear – because Lego can break, but it takes a lot to make it happen!


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