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How LEGO® Bricks And Toys Are Made

Reading Time: 6 Min
Published: 13 March, 2023
Updated: March 13, 2023
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LEGO® bricks and toys are beloved by kids and adults alike, but how exactly are these iconic pieces put together? In this article, we’ll take a look at the manufacturing process of LEGO® bricks and toys: from raw materials to finished products. We will explore what goes into creating each component, how they’re assembled, and quality control measures that ensure safe play. By the end of this article, you’ll have a better understanding of just what makes LEGO® such an iconic brand. Let’s get started!

How Is LEGO Made Video

Raw Materials Used to Make LEGO® Bricks and Toys

When it comes to LEGO® bricks and toys, the raw materials used are plastic pellets, color pigments, and molding compounds.

Plastic Pellets To Make LEGO®

Plastic pellets are the foundation of LEGO® bricks and toys. The pellets are made from thermoplastics like polyethylene, polypropylene, or acrylonitrile butadiene styrene (ABS). The specific type used depends on the product being made and the desired properties of that item.

Plastic pellets provide strength and durability to the finished product, as well as flexibility when creating custom pieces. The pellets also have a low melting point so they can be easily molded into shapes during manufacturing.  Finally, plastic helps give LEGO® products a glossy finish while ensuring they are lightweight enough for play.

Color Pigments For LEGO®

Color pigments are the next component necessary for LEGO® bricks and toys. These pigments give the plastic pellets their bright hues, ranging from yellow to green to red. They also allow for a variety of custom creations made via injection molding processes.

The type of pigment used depends on the product, as some may need more intense colors than others. Pigments also provide protection against UV light and help prevent discoloration over time. Finally, these pigments must be food-safe in order to meet safety standards for children’s products.

LEGO® Molds

In order to create LEGO® bricks and toys, molds are used. Molds are specialized tools that shape plastic pellets into specific shapes and sizes. These molds come in a variety of shapes, such as cubes, cylinders, or even human figures.

With these molds, custom parts can be created for any desired design. In addition, multiple pieces from the same mold can be made at once so production is efficient and cost-effective. Finally, molds must be designed with precision in order to ensure accurate sizing and a consistent product every time.

Design and Manufacturing Process of LEGO® Bricks and Toys

1. Molding Compounds To Make LEGO®

Molding compounds are essential in creating LEGO® bricks and toys. This is a combination of polymers that ensures parts can fit together accurately and uniformly. Compounds also provide strength and durability that allows for easy assembly and disassembly of pieces.

Molding compounds can be customized to create intricate details or special shapes, allowing LEGO® products to have an almost endless variety of options. Finally, these compounds must meet safety standards in order to ensure the finished product is safe for children’s play.  Overall, molding compounds help give LEGO® bricks and toys their iconic look and feel.  ​  ​  ​  ​  ​  ​  ​

2. Injection Molding Processes Turn Materials Into LEGO®

The injection molding processes are what turn the raw materials into LEGO® bricks and toys. This process involves heating plastic pellets and injecting them into molds under high pressure. The shape of the molds determines what type of pieces will be created, while the pressure ensures uniformity in size and shape.

The temperature at which LEGO® plastic is heated to turn them into LEGO® Bricks is 450° Fahrenheit or 230° Celcius.

During this process, some parts may need to go through additional steps in order to add details or special shapes. Once finished, pieces are checked for quality before moving on to the next step in production. Overall, injection molding processes make it possible to create a wide variety of LEGO® products quickly and efficiently.

3. Assembly of the LEGO® Pieces

This involves sorting and organizing the molded pieces, then piecing them together to create the final product. Specialized tools are sometimes used to assist in this process, such as robotic arms or specialized screws.

The final product must meet quality control standards before it can be packaged and shipped out. Once complete, LEGO® bricks and toys will have gone through a rigorous design and manufacturing process that ensures a safe and fun experience for children everywhere.

Packaging Process for LEGO® Products

1. Packaging The LEGO® Product

The packaging process for LEGO® products is the final step in the production process. Packaging materials are specially designed to protect each piece from damage during shipping and storage. These packages must be durable enough to withstand any outside forces, while also being lightweight and easy to store.

2. Adding Assembly Instructions To The LEGO® Package

Additionally, assembly instructions must also be included with each package in order to make sure consumers know how to properly put together their new set. Lastly, all packaging materials need to meet certain safety standards so that they can be easily recycled or reused when needed.

Note: Since 2023 LEGO decided to include assembly instructions online, this saves material and is more sustainable

Quality Control Measures for LEGO® Products

Quality control measures are an important part of the LEGO® production process. All pieces must be checked for accuracy and quality before being released to the public. This includes checking for uniform size, shape, colors, and textures. Molds and injection molding machines may also be inspected regularly to ensure they are working properly.

Additionally, final products are tested against safety standards prior to release in order to make sure they meet all necessary guidelines. Overall, these quality control measures help guarantee that each LEGO® product is safe and high-quality when it reaches customers.

Cost-Efficiency of LEGO® Products

The cost-efficiency of LEGO® products is one of its main advantages. Despite their intricate and detailed designs, the production process for these items can be highly cost-effective due to the use of injection molding machines and molds.

Additionally, quality control measures help ensure that each product meets all necessary safety standards so that only high-quality products reach customers. Finally, efficient packaging materials help to reduce costs by reducing shipping and storage expenses. All in all, this makes LEGO® products a great choice for consumers who are looking for an affordable yet durable toy option.

Advantages of LEGO® Products

The advantages of LEGO® products are plentiful. Not only are they safe and durable, but they also come in an array of shapes and sizes which can encourage creativity in children. Furthermore, their cost-efficiency makes them a great value for the money.

Additionally, their fun and imaginative designs help to engage kids in playtime activities. Lastly, thanks to their efficient production process, these items can be easily mass-produced so that everyone can enjoy them at a reasonable price point. No matter the age or skill level, LEGO® products can offer something fun and exciting for all kinds of toy enthusiasts​​.

Disadvantages of LEGO® Products

The main disadvantage of LEGO® products is that they can be difficult to assemble for some people. The instructions may not be easy to follow, and the pieces may require detailed attention in order to fit correctly.

Additionally, because these items are small and contain many parts, they may pose a choking hazard for children under three years old or those with special needs. Finally, despite their cost-efficiency, LEGO® products can still be pricey when compared to other toys on the market.

More Info

What is so special about LEGO® bricks?

The interlocking design of LEGO® bricks makes them incredibly versatile and enables the construction of almost any structure imaginable. Additionally, their durability and affordability make them a great choice for both children and adults alike. Finally, the range of themes available means that there’s something exciting for everyone to enjoy!​​​

Are LEGO® bricks compatible with other brands?

Yes, some LEGO® products are compatible with those from other building block manufacturers like Mega Bloks, K’NEX, and Kre-O. However, it is important to note that not all sets from these companies will be compatible since each brand has its own unique patterns and measurements for its pieces.

Moreover, using pieces from other brands may compromise the structural integrity of your build. Therefore, it is best to use only official LEGO® products when constructing with these building blocks to ensure lasting enjoyment and safety for all!

At What Temperature Are LEGO® Bricks Made?

LEGO® Bricks are Made at 230°C or 450°F.


In conclusion, LEGO® products offer an outstanding combination of fun and creativity for all kinds of toy enthusiasts. Their intricate and detailed designs are made possible by efficient production processes like injection molding machines and molds.

Additionally, their safety standards and cost-efficiency make them great value for the money. Although these items can be difficult to assemble at times, they can provide hours of entertainment while also encouraging imagination in children. For people looking for a safe and affordable toy option, LEGO® products are a great choice.

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Written by Matthew Mitchell
Hey, I am Matthew Mitchell and I am an AFOL from the UK. I have been fascinated by LEGO® since I was a child. My two children are in love with LEGO® and it's because of them that my interest continued to grow, this is how I fell in to the rabbit hole of MOCs (my own creation). 

With every new MOC I saw I became just a bit more addicted to the endless possibilities that LEGO® offers. This led me to creating Belle-Ve Bricks, a platform where talented designers can share their work with the world.

And where we can create together with you, custom models.
About Matthew Mitchell
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