How To Glue Legos Together (Best Glue For Legos)

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Not sure what kind of glue to use for Legos? With so many glue products out there, it can be a huge headache to decide which one is best for your project. Some glues are meant for specific materials and may not work as well on Legos as others.

In this post, I’ve gathered the best glue products and tips on how to glue Legos together. The best glue for Legos is the one that dries clear and holds tight. It’s also important to use an adhesive that won’t seep through the plastic and leave behind a sticky residue.

If you are building a Lego set to display permanently or temporarily at home, I’ve got you covered! From this list, select your glue based on your preferred application process and preferences for a permanent or temporary bond. Remember, if you plan to deconstruct your Lego set in the future, it’s important to choose a temporary glue!

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Best Glue For Legos

How To Glue Legos

How To Glue Legos Permanently

  1. While constructing, use a permanent spray glue to glue together a Lego set.
  2. While assembling Legos, add super glue to permanently glue Lego blocks together.
  3. Plastic glue is designed to melt plastic together for a seamless bond. Add this glue onto Lego blocks while building.

How To Glue Legos Temporarily

  1. Temporarily glue Lego sets together with a reposition-able adhesive spray.
  2. Use a temporary craft glue to hold together Legos. Apply this glue to Lego blocks while assembling.

1. Permanent Spray Glue

Permanent spray glues are a quick and easy way of gluing two surfaces together. To use, simply spray the liquid adhesive on the desired objects and press them together for a few seconds. For best results, apply the glue between each block instead of spraying over a finished Lego set.

Spray glues are perfect for Legos because they don’t leave any residue and allow you to glue both large pieces and small pieces together quickly. The liquid will not dry immediately, so you will have a small amount of time to stack a few blocks. For this reason, I recommend lining up all the legos blocks before spraying.

The best permanent spray glues for Legos is 3M’s 45 General Purpose Spray Adhesive. This glue is affordable, has excellent adhesion, and works on a wide range of materials!

Here’s how to glue Legos together permanently with spray glue:

How To Glue Legos With A Permanent Spray Glue

  1. Make sure the Lego blocks are clean before gluing. Clean dirty pieces with warm water and dish soap.
  2. Go outside or to a well ventilated area. Cover your work surface with newspapers. Wear a mask, gloves, and protective eyewear.
  3. Line up the Lego blocks before spraying. Take the Lego pieces and spray a small amount of adhesive on the Lego studs (parts of the brick that allow it to
  4. connect with other pieces). Connect the pieces and press down firmly. Use a wet cloth with a few drops of dish soap to wipe down any excess glue seeping through the cracks.
  5. Continue Step 3 until your Lego set is completely constructed.

2. Super Glue

Looking for the best glue for Legos? Super glue (also known as cyanoacrylate glue, instant glue, or crazy glue) is a strong adhesive that can bond most materials together. This type of glue usually comes in a tube or bottle with an applicator nozzle for easy application on small objects.

The best way to use super glue for Legos is to apply a small amount onto the surfaces of pieces you want to assemble and then hold them tightly together for about 30 seconds. Super glue an ideal glue for gluing Legos together permanently. It has a strong bond and dries in seconds!

For Legos, I recommend using Gorilla Super Glue Gel. This is one of the best permanent glues for Legos!

How To Glue Legos Together With Super Glue

  1. Make sure the Lego blocks are clean before gluing. Work in a well ventilated area. Cover your work surface with newspapers to protect it from any spills.
  2. Line up the Lego blocks before gluing. Take the Lego pieces and add a small amount of super glue on the Lego studs (parts of the brick that allow it to connect with other pieces). Connect the pieces and press down firmly.
  3. Continue Step 2 until your Lego set is completely constructed.

3. Plastic Glue

Not sure what kind of glue to use? Plastic Glue is a common adhesive that is used to bond together plastic. It’s a strong glue that will create permanent bonds by melting plastic into each other.

Lego pieces are made of ABS plastic, so they can be glued together with most types of plastic glue. ABS plastic is used in traditional Legos and other toys, as well as, in many 3D printed models. Since this type of glue melts plastic, it’s important to avoid gluing the outside parts of Legos.

Citadel Plastic Glue is the best permanent glue for Legos. This product is designed specifically for assembling plastic miniatures permanently, but works well on Lego blocks too. This glue will bond the pieces almost immediately, so I recommend holding them in place for about 30 seconds before adding the next piece.

Here’s how to glue Legos together with plastic glue:

How To Glue Legos With Plastic Glue

  1. Make sure the Lego blocks are clean before gluing. Clean dirty pieces with warm water and dish soap.
  2. Go outside or to a well ventilated area. Cover your work surface with newspapers. Wear a mask, gloves, and protective eyewear.
  3. Line up the Lego blocks before gluing. Take the Lego pieces and add a small amount of plastic glue on the Lego studs (parts of the brick that allow it to connect with other pieces). Connect the pieces and press down firmly.
  4. Continue Step 3 until your Lego set is completely constructed. If any glue seeps through the cracks, wipe down immediately with a wet cloth.

4. Reposition-able Adhesive Spray

If you are looking for the best glue for Legos (one that will not damage Lego blocks), you should use a reposition-able adhesive spray. This is the best glue for Legos because it will not break down the plastic in the bricks. It is also water soluble, so it can be washed away with water.

Temporary spray glues are an easy and affordable way to quickly glue Legos together. The nozzle on the spray can also allows for precision application. For best results, I recommend using Krylon’s Easy Tack Reposition-able Adhesive Spray. This is the best temporary spray glue for Legos!

How To Glue Legos Together With A Reposition-able Adhesive Spray

  1. Make sure the Lego blocks are clean before gluing. Go outside or to a well ventilated area. Cover your work surface with newspapers. Wear a mask, gloves, and protective eyewear.
  2. Line up the Lego blocks before spraying. Take the Lego pieces and spray a small amount of adhesive on the Lego studs (parts of the brick that allow it to connect with other pieces). Connect the pieces and press down firmly. Use a wet cloth wipe down any excess glue seeping through the cracks.
  3. Continue Step 2 until your Lego set is completely constructed.

5. Temporary Craft Glue

Looking for the best temporary glue for Legos? A temporary reposition-able adhesive is a great way to bond materials together without the commitment. This type of glue is perfect for beginners because it won’t ruin your Legos and it’s easy to remove when needed.

I recommend selecting a non-toxic craft glue. This is a great option for both children and adults who want to temporarily glue together Legos. For best results, try using Aleene’s Tack-It Over & Over Liquid Glue. When you want to take your Lego set apart, all you need to do is soak it in a container of warm water and a few drops dish soap.

Here’s how to glue Legos together with a temporary craft glue.

How To Glue Legos With A Temporary Craft Glue

  1. Make sure the Lego blocks are clean before gluing. Cover your work surface with newspapers to prevent drips.
  2. Line up the Lego blocks before gluing. Take the Lego pieces and apply a small amount of glue on the Lego studs (parts of the brick that allow it to connect with other pieces). Connect the pieces and press down firmly. Use a wet cloth wipe down any excess glue seeping through the cracks.
  3. Continue Step 3 until your Lego set is completely constructed.

Summarized: How To Glue Legos Together

This post gathers the best temporary and permanent glues for Legos. Here are all the recommended products from this post to help you select the best glue for Legos:

Best Permanent Glue For Legos

Best Temporary Glue For Legos

Conclusion

In this post, I’ve gathered the best products and techniques on how to glue Legos together. The best glue for Legos depends on your desired application process (spray on or glue separately) and result (permanent or temporary).

Depending on whether or not you want a permanent or temporary hold, it’s important to select an appropriate adhesive for your project. To glue a Lego blocks together permanently, consider using a permanent spray glue, super glue, or plastic glue. To keep a Lego set temporarily stuck together, try a reposition-able adhesive spray or temporary craft glue.

Temporary glues are a great way to bond Legos without the commitment. To remove, all you need to do is soak the legos in a container of warm water and a few drops of dish soap. It’s best to select a non-permanent glue if you think you’ll want to deconstruct your Lego set in the future.

I hope this post gave you some helpful advice on what kind of glue to use for your Legos. Good luck!