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7 Best Glue For Legos | Reviews + Buyer’s Guide

Are you fond of finishing Lego projects but hate when the blocks come apart? Don't worry, we have a solution for you. 

Best Glue For Legos

Most of us have played with Lego blocks as kids and have good memories attached to them. There must have been times when we really liked a project but couldn't keep it together as the blocks got loose over time. 

Luckily, the adhesives industry has advanced since then, and now we have a number of glue options that can bond Lego bricks easily. Having said that, the numerous options can make it challenging to pick the perfect product, especially for newbies. 

Therefore, we thought of creating a list with some of the best glue for Legos available on the market to help you out. We have even included a handy buying guide so that you can narrow down your options with ease. 

So, without further ado, let's get started. 

Listed below are the 5 best glues for Legos from our list:

  • Gorilla® Super Glue: This glue stands out for its no-mess application due to its thick gel consistency and anti-clog cap, which prolongs its usability. It's fast-drying and the compact bottle design is comfortable to handle, however, using too much can result in visible gaps between Lego blocks.
  • Loctite® Super Glue: This brand is known for its versatile and durable formula that includes features such as precise application and fast drying. A standout feature is its rubber-toughened glue that remains flexible yet resistant to heavy impact and vibration, though the applicator needs frequent cleaning to prevent clogging.
  • GLUEMASTERS® Professional-Grade Adhesive: Noted for its industrial-grade formula that works well for various projects including Lego construction. The precise applicator and different viscosity levels make it versatile and highly effective. Use in well-ventilated spaces is recommended due to its strong formulation.
  • Rhino Glue®: Its fast drying time and clear result make it a great choice for Lego constructions. The extra-strong formulation creates a shock-resistant bond that ensures longevity, yet its strong smell might be off-putting to some users.
  • Krazy Glue® All-purpose glue: This glue offers a strong bond that remains effective over a long period. The precision applicator allows for a smooth application process, and the stay-fresh container ensures multiple uses. Product quantity in individual packs might be less for bigger projects.

To help keep your Lego masterpieces intact, there are various types of glue available in the market that are specifically designed for use with Legos. But with so many options out there, it can be tough to determine which one to use. That's why we've put together a list of the 7 best glues for Legos, to help you choose the right one for your needs.

1. Gorilla - Best for Precision

Let's start with a brand that most people know — Gorilla, a manufacturer that has consistently produced the best quality adhesives. And if you want glue for permanent Lego constructions, then this product is bound to be a good choice. 

There are several things to like about this Gorilla super glue. But, first, we would like to divert your attention toward its consistency. Unlike any other liquid glue, this formula comes in a thick gel, making it easy to apply on vertical and horizontal Lego pieces. That said, the no-mess Gorilla glue makes the application process easy as the glue won't get everywhere. 

Another key feature of this glue is its packaging. You can now hold the cleverly designed compact plastic bottle in your hand for long hours while working on an intricate project. 

However, what probably stands out the most is the anti-clog cap, which keeps the Gorilla glue from drying out, thus allowing multiple uses with each bottle. 

Furthermore, the Gorilla super glue gel takes between ten to forty-five seconds to set, based on the amount of glue used. And, as it gets fully cured in 24 hours, you wouldn't need to wait for days before handling the Lego construction. 

Overall, this is one of the best permanent glues for Lego blocks. But, our only concern is that laying down a thick layer of Gorilla glue may leave a visible gap between the blocks. So, you need to be a bit more careful while using the glue and only apply a few drops. 

Adhesive Type: Cyanoacrylate | Cure Time: 10-30 sec. | Bond Strength: High | Heat Resistance: No | Gap Filling: No | Viscosity: Gel | Waterproof: No

2. Loctite - Best for Flexibility

For the last 50 years, Loctite has remained a leading brand of permanent glues available on the market. The best thing about this product is its innovative formula that promises versatility and durability. And, as it's widely available from different retailers, you won't have a hard time searching for this super glue

To begin with, what pulled us towards this product was the packaging. We really liked the bottle design, which is equipped with squeezable sides to make the application process easier. What's more, the sides have grooves to help you maintain a better grip on the bottle. Not to mention how the precise nozzle lets you apply drops of glue even on the tiniest of Lego bricks. 

However, the property that truly makes this permanent adhesive a worthy product is its unique formulation. That said, it is a rubber-toughened glue that allows bonds to be flexible while also giving it the ability to resist heavy impact and vibration.

Moreover, this glue dries clear, so you wouldn't need to worry about any traces showing through the Legos, especially between darker-colored pieces. On that note, the transparency provides a seamless look to the blocks when the right amount of glue is applied. 

One of our only concerns with this glue is that the product may build up on the applicator if it isn't cleaned after every use. So, you should always remember to wipe off the applicator with a paper towel to prevent it from clogging. Also, refrain from keeping the bottle uncapped for long periods.

Adhesive Type: Epoxy | Cure Time: 5 Minutes | Bond Strength: High | Heat Resistance: Yes (up to 300°F) | Gap Filling: Yes | Viscosity: Thick | Waterproof: Yes

3. GLUEMASTERS - Best for Industrial Use

Are you in search of a permanent glue that won't lose its bond even after years? If yes, you can try this adhesive from GLUEMASTERS, which boasts an industrial-grade formula. This makes the glue excellent for all kinds of projects, from Lego construction to fixing heavy-duty machines. So, let's check out its features.

If you are a hobbyist who likes to indulge in different projects, it's a must to have this GLUEMASTERS professional-grade adhesive. It comes in various viscosity levels to choose from, but we recommend the thick variant for Legos as it works well for vertical surfaces. Nevertheless, this glue is available in different quantities, including an 80 oz bottle. 

However, the best feature of this glue has to be its precise applicator. The nozzle allows you to place the smallest drop of adhesive on the Lego blocks before attaching the plastic pieces. Additionally, the bottles are only filled to two-thirds of the total capacity to give you more control while applying the glue. 

Besides its function as a glue for Legos, this professional-grade glue is quite versatile. You can use it to bond materials like rubber, ceramic, wood, metal, and other plastic objects. Needless to say, it's a helpful glue to have in your toolbox.

Although not a dealbreaker, its industrial formulation is only suitable for use in a well-ventilated space. The manufacturer also suggests using protective gear, like gloves and goggles, to keep yourself safe from coming in contact with the glue. Apart from this, we don't have any complaints about this permanent glue. 

Adhesive Type: Cyanoacrylate | Cure Time: 5-15 sec. | Bond Strength: High | Heat Resistance: No | Gap Filling: No | Viscosity: Thin | Waterproof: No

4. Rhino Glue

Have you been looking for cyanoacrylate-based hobby glues for permanently bonding your Lego construction? If so, this heavy-duty Rhino glue can be an excellent choice to finish the task as fast as possible without the Lego set falling apart. This glue is also part of the Pro series by Rhino, guaranteeing top-notch quality. 

Right off the bat, what we liked about this glue was its fast drying time. Notably, the drying time is exceedingly swift compared to other permanent glues. Rhino categorizes this product as a tough-instant glue, and it does live up to the claims. So, while using this product, you won't need to wait for hours as the glue cures within 20 minutes. 

Moreover, the Rhino glue dries completely clear. Hence, there's no need to worry about needing to paint over the adhesive to match the color of the Legos. And, as applying a few drops does the job, your Lego bricks won't have a thick layer of glue between them. 

Furthermore, one of the critical features of this glue has to be the unique formula that makes it stronger than other glues. Because it's a maximum-strength adhesive, your Lego bricks will remain glued together permanently. Plus, the glue has been toughened to make it shock-resistant and maintain a strong bond under pressure. 

When it comes to this glue, the only drawback we found was its strong smell. It can be a bit overwhelming for people who may be averse to the smell of adhesives. So, we recommend wearing a proper mask while using this glue to keep yourself from inhaling it. 

Adhesive Type: Cyanoacrylate | Cure Time: 10-30 sec. | Bond Strength: High | Heat Resistance: No | Gap Filling: Yes | Viscosity: Thin | Waterproof: Yes

5. Krazy Glue

If you didn't know already, Krazy Glue comes from the house of Elmer's, so we were really thrilled about trying this product. And, this super glue didn't fail our expectations when it came to gluing together Lego bricks, as it does the job quite smoothly. So, let's learn a bit about its features. 

Are you tired of using superglues that seem to lose their bond over time? Don't worry, as Krazy Glue has got you covered. The strong all-purpose bond of this glue helps to keep the blocks attached even after a long time has passed. So, your Lego piece won't suddenly crumble apart after a few weeks after you accomplish the whole building process. 

Having said that, for us, the best feature of the Krazy Glue was the applicator which is perfect for attaching Legos, particularly the tiny pieces. The precision tip places a small dab that's enough to give a strong bond. And, as the tube is compact, the application process is pretty smooth.

On top of that, the glue comes in a stay-fresh container, so it remains viable for multiple uses. However, do make sure to cap it properly after every use. 

To be honest, this is one of the best glues for Legos that we have tried out. However, our only complaint is that the individual packs have very little product. So, you'll certainly need to buy more than one tube of the Krazy Glue for a bigger Lego art piece. 

Adhesive Type: Cyanoacrylate | Cure Time: 10-30 sec. | Bond Strength: High | Heat Resistance: No | Gap Filling: No | Viscosity: Thin | Waterproof: No

6. Le-Glue Temporary Glue 

Did you know that a kid made the Le-Glue non-permanent glue? Yes, this product was designed by Tripp Phillips when he was in the third grade. Unlike the other Lego glues mentioned by us, this one can be safely used by kids to create their own fun Lego projects. So, let's check it out. 

First of all, let's focus on the use of the Le-Glue temporary glue. As you can understand, this glue is meant to bond the Legos temporarily. But, that doesn't mean your blocks will fall apart, as this glue from Le-Glue has a hold that's twelve times stronger than other temporary glues. 

Moreover, it works for all kinds of building blocks, including Lego, Nano Blocks, and Mega Blocks. You just need to apply a small dab of this temporary glue on one block and press the other block on it for some time to get a reliable bond. 

Furthermore, Le-Glue temporary glue comes in a non-toxic and solvent-free formula. And, it's made from all-natural ingredients. So, your kids can safely play with it for as long as they want without facing any health issues. 

Plus, it's pretty easy to break the bond of the Le-Glue temporary glue as all you need to do is soak the blocks or project in warm water. 

One of the only problems with this product is that the application can quickly get messy, especially for kids. As this glue comes in plastic packaging, you need to pour it into a container before starting your project. However, the good thing is that it's easy to get rid of this glue from your clothes or skin, and it doesn't leave any residue. 

Adhesive Type: Temporary | Cure Time: N/A | Bond Strength: Low | Heat Resistance: No | Gap Filling: No | Viscosity: Thick | Waterproof: No

7. BrickShield

Have you been looking for a semi-permanent glue that's easy to apply? If so, then check out this non-toxic and kid's safe glue from BrickShield that has been designed specifically for Legos. It comes in a handy spray bottle that lets you apply the glue directly on the bricks without needing any applicator. 

Straight away, what we liked about this product was the packaging which makes applying the glue pretty easy. Do follow the directions specified by the brand, and you'll be able to glue Legos with precision. A nice thing about the bottle is that the kids face no problems in spraying, and it doesn't hurt their hands. 

Moreover, this glue has been specially designed for plastic blocks of all kinds, including Lego. And, it drastically reduces the time needed to glue Legos for elaborate projects because of its fast application. 

Another one of the key features of this temporary brick glue is its non-toxic and kid-safe formula. This is rarely seen in aerosol products made for kids, so we were pretty impressed with this adhesive

Plus, the brand provides a 100% satisfaction guarantee with this spray glue. So, if, for some reason, you're not happy with this product, there's an option to contact customer care to receive a refund. 

We would like you to know that this isn't really a drawback that's exclusive to this glue as it's common in all spray glue products. When you spray to apply the glue from a distance, there's bound to be some wastage. This means that it's always better to keep a backup of this glue to avoid running out of it. 

Adhesive Type: Silicone | Cure Time: 24 Hours | Bond Strength: Medium | Heat Resistance: Yes (up to 500°F) | Gap Filling: Yes | Viscosity: Thick | Waterproof: Yes

What is the Best Glue For Legos?

This section provides a straightforward comparison of leading glues for Legos. The table below outlines key Lego adhesive specifications, including type, cure time, bond strength, heat resistance, gap-filling capability, viscosity, and waterproofing.

ProductTypeCure TimeBond StrengthHeat ResistanceGap FillingViscosityWaterproof
GorillaCyanoacrylate10-30 sec.HighNoNoGelNo
LoctiteEpoxy5 MinutesHighYes (up to 300°F)YesThickYes
GLUEMASTERSCyanoacrylate5-15 sec.HighNoNoThinNo
Rhino GlueCyanoacrylate10-30 sec.HighNoYesThinYes
Krazy GlueCyanoacrylate10-30 sec.HighNoNoThinNo
Le-Glue Temporary GlueTemporaryN/ALowNoNoThickNo
BrickShieldSilicone24 HoursMediumYes (up to 500°F)YesThickYes

Buying Guide for the Best Glue for Legos

When choosing the best glue for Legos, you need to know some essential points that'll help to make the right decision. As gluing the Legos is often based on specific projects, skipping any points may leave you with completely unusable glue. So, let's check out these key points. 

1. Viscosity

One of the most important features to look for in glue is its viscosity. A thin consistency may prove to be challenging while gluing Legos as it may cause the blocks to slide around. Hence, it's better to opt for glue with thick viscosity or a gel texture for attaching the Legos easily. 

Moreover, thicker glues are easier to apply on vertical surfaces. As Lego projects can have a mix of vertical and horizontal planes, opting for glues with thick viscosity proves to be an excellent choice. And it makes the process less messy. 

2. Permanence 

Would you like the Lego set to have a permanent bond? If so, it's best to choose a glue that comes with the capacity to bond the surfaces permanently. While choosing a permanent glue, make sure to handle your Lego construction properly before it cures properly. 

However, while researching the glue for Legos, we found out that some people prefer semi-permanent or non-permanent glue. These options are better to display the completed project for a certain period. It also leaves you with the choice to dismantle the Lego structure whenever needed. 

On that note, while choosing a non-permanent or temporary adhesive, don't forget to check the process of breaking the bonds. Typically, the glues are water-soluble and dissolve in warm water, but some may require the application of certain chemicals to come off the Legos entirely. 

3. Curing Time 

Another point to check while looking for the best glue for Legos is the curing time. As you may know, there's a wait time for most glues when it comes to handling the pieces after attaching them. In the case of Legos, we want it to be as fast as possible to avoid detaching the pieces. 

Now, the cure time or the total time taken for the glue to dry is usually between 24-48 hours, depending on the brand and consistency of the adhesives. Superglues take the least time, while white glue takes the longest. So, make sure not to forget about the curing time while ordering your Lego glue. 

4. Ease Of Application 

On searching for how to glue Legos, a common suggestion you'll notice tells you to look for a suitable glue. And, that's why it's important to choose a Lego glue that comes with ease of application. 

You don't want it to be too messy, as it can make working with small blocks frustrating. At the same time, try to find a product with a precise applicator to avoid using too much glue. 

Having said that, the application technique does vary depending on the project, so try to find a product that fits your demands from the adhesive.

Can glue be used on all types of Legos?

Most Lego types, such as regular and Duplo Legos, can be bonded with glue. Nevertheless, ascertain that the glue implemented is compatible with the plastic material constituting your Legos for seamless application.

How do I remove glue from Legos?

The process of glue removal from Legos can prove problematic, with the potential for damage to the plastic. Usage of a solvent like acetone or nail polish remover is a common approach, but caution is advised as these substances could render the plastic brittle.

Can I take apart Legos after using glue?

Taking apart glued Legos is typically not feasible, as the glue tends to create a permanent bond. Thus, you’re advised to think carefully before deciding whether to permanently adhere your Legos together using glue.

Is glue safe to use on Legos?

Applying glue to Legos is perfectly safe, however, it’s crucial to use glue explicitly designed for Lego use. This ensures the adhesive won't inflict damage to the plastic, maintaining its structural integrity.