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How To Repair Cracked Plastic With Few Easy Steps

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Plastic is one of those materials that you see a lot in your life. It pops up everywhere, from your car to your house, and cracks can start to show up at the most inconvenient time possible. Luckily, there are a few ways around this problem that don’t involve buying an expensive replacement part.

The good news is that you can repair it quickly and effectively with some of the superglues available on the market.

Let's take a look at what kind of glue works best for repairing plastic.

A Type of Glue for Every Job

Multipurpose glue

There are a variety of epoxies and adhesives that can fill in gaps of cracked plastic, resist water on wood or plastics, and dry quickly. Polyurethane excels at this responsibility while also being able to withstand higher temperatures than other glues or cement without becoming brittle after 24 hours exposure time has passed (depending upon type). Contact cement products have even less waiting period between application and drying.

TIP: Polyurethane is not necessarily a safe product for the home. The material expands and contracts, causing skin reactions or respiratory problems. It also causes fire risks since Polyurethane must always be used with care near heaters (or open flames).

multipurpose glue


You can use it on plastic, wood, or ceramic surfaces; most of them also work on metal. One drop will do the trick, and it's a fast setting, meaning you don't need clamps, but it is still handy to align edges with tape while drying!

TIP: Please don't use it on the skin. The fumes are harmful and can irritate your eyes, nose, or lungs while bonding the surface.

Wood Glue

The glue will make strong joints and is safe to handle. It can also be washed off with water while still wet, but it's best if you let the bond dry before touching anything else for a few hours or overnight first!

TIP: 24-72 hours drying time. Clamps are sometimes necessary, and glue residue is often present after the bonding which you can scrape off after it has dried.

Two-Part Epoxy

The epoxy is perfect for filling in any gaps on your project, be it wood or ceramic. It can even hold up underwater! In addition, the two-piece syringes ensure a fast application process with little mess.

TIP: You need to mix the two parts to make a thin paste and apply it in layers. Let it harden for 24 hours before handling. Some quick-set epoxies irritate skin and emit vapors, making them difficult to work with.


Surface Preparation Before Gluing


Degreasing is the process of removing any loosely held dirt, grease or other contaminants from a surface. It can be done by using volatile solvents such as toluene, acetone, and methyl ethyl alcohol, but make sure that you meet all environmental regulations first before selecting which solvent will work best for your needs.

Some standard methods include the three main steps:

  1. Vapor degrease/clean/rinse the parts with appropriate solvents. 
  1. Immerse in a fresh bath of solvent for washing and follow by immersion into a second tank to rinse thoroughly.
  1. Drying the surface substrate after cleaning away residue from previous process steps or other contaminants.


The surfaces need to be cleaned before and after abrasion to remove any pre-existing contaminants on the surface.

Abrasion can be successfully used to roughen the surface of many plastics, including PEEK, nylon, and polycarbonate. However, caution must always be exercised when using abrasion on certain materials because some may not allow this technique due to their nature which depends on how they're manufactured - for example, silicone is too smooth while other rubbery types are more susceptible.

Step 1: Be prepared

Before you repair cracked or broken plastic, remember that all glues need a clean surface to stick on. A quick cleaning with an alcohol-based cleaner will do the trick nicely.

Step 2: Start Gluing

Once your broken plastic item is ready to glue, put it on an old newspaper or something similar. Then unscrew the glue cap, spread an even line of adhesive onto both damaged surfaces of the material so that they are sealed together for good.

Step 3: Stick parts together

Lining up the pieces and gently pressing them together will cause an immediate bond, but maximum strength is achieved after 24 hours. To ensure you get a perfect seal, store your item lying on one side for best results!

Step 4: Take a break

Put away the pieces of plastic and wait 10 minutes for them to thoroughly bond - that's how long it should take at normal room temperature. The glue will be fully cured in 24 hours.

How To Remove Super Glue Stains

  1. Super glue can sometimes leave you with a messy work area. But don’t worry, we have the solution to get back on track! 

2. Add some nail polish remover to an old rag and treat the affected area.

3. Wait 10 minutes to see if the acetone is harsh on your surface. If not, put more of it on and rub in circles over dried super glue until you're satisfied with the results. Scrubbing off residue can be a tricky task, but it’s not impossible. Remember to proceed slowly and use only gentle scrubbing motions with the toothbrush, adding more acetone as needed!

4. After the stain is gone, moisten a clean cloth with water and dab it to remove any acetone residue. In the end, use a clean cloth to dry.

NOTE: Always be sure to test any chemicals or adhesive removers on some surface area before applying them.

Safety Tips for Using Super Glue

Super glue safety tips
  1. Read the application Instructions before using
  2. Work in a well ventilated area
  3. Always open glue containers carefully so you don't spill it on your hands.
  4. Always wear gloves when working with glues.
  5. Make sure to close the lid after use so it doesn't spill.
  6. Be calm and patient if an accident occurs
  7. Avoid using super glue on cotton and wool

WARNING: Super glue is a product that many people use in their everyday lives. It can be useful, but there are some precautions to take when working with superglue because of the chemicals involved and how they react on different materials like cotton or wool clothing which may cause a fire.


Best All in One Solution For Repairing Broken Or Cracked Plastic - Bondic UV Liquid Plastic

What is a Bondic UV Liquid Plastic Welding Kit?

Let’s get one thing straight: Bondic is not glue!

Bondic is a LED UV liquid plastic welding kit that can fix broken fabrics, plastics, and glass. It also can be used on low volt and amperage circuits.

Bondic remains in liquid form until exposed to intense ultraviolet light (UV) for just four seconds.

It can be used for the same purpose as the glue or where it has failed to accomplish its task and provides better results than glues for plastic.

Bondic is a brand new, innovative, and better alternative to superglue. It works quickly with no mess and lasts much longer than other adhesives on the market today.

Not only does it fix or mend broken stuff, but it also makes them stronger than they were before. This is because the more you apply, the stronger the bond it forms. Unfortunately, the same cannot be said about super glue.

Pros of Using Bondic

  • Non-toxic, so you can feel assured that it's safe to use.
  • Affordable
  • The fix is fast and long-lasting.
  • It is so easy to use and clean. In case of a spill or anything else, wipe off with water!
  • It only dries when exposed to UV light for four seconds.
  • It can be used on a variety of materials, be it metal, plastic, fabric, glass, you name it.

Cons of Using Bondic

  • The Bondic only gets activated when exposed to ultraviolet light.

Who Is Bondic For?

Who is Bondic for?

When you need a product for fixing plastic, this one is the best. It can handle small pieces, and it's great at working with car parts. If your house has lots of fixing, then this could be just what you're looking for because it's durable enough to get the job done.

Does Bondic Work?

Yes, it does work. Bondic will not stick to your fingers like standard glue because its unique properties don't allow the liquid to form until exposed to UV light. Handling this adhesive is easy! Follow the steps below:

Bondic sanding
Bondic small amount
Bondic UV
Bondic finish look
  1. First of all, your broken part needs to be sanded down. This step will create a rough enough surface for strong bonding and make sure not to leave dust or dirt particles left on it after treatment.
  2. Next, put a small amount of liquid plastic on the broken part and ensure there’s enough space for your UV light to shine.
  3. Now you need to cure the bond with UV LED light. It takes around 5-6 seconds, so be patient! If it's too large for your project or just everywhere in general, then cure them one layer at a time until they're all set.
  4. You can file or sand the part when you've done all the steps, so it looks how you want. If you are not concerned with its appearance, leave it as is!

NOTE: Bondic cannot bond on greasy surfaces. Any grease will cause it to peel.

Bondic facts

What Can You Fix With Bondic?

Bondic application

Bondic is the perfect tool for fixing your damaged and broken electronics, as well as creating new threads for screws.

It can serve as a repair agent for broken toys so that children aren't forced to replace their cherished toys with new ones when they still may function correctly after a minor repair.

For a couple of minutes, you can make your kid feel happy by giving them back their favorite toy.

Some of the other usages for Bondic consist off:

  • Replacing a damaged part of the plastic
  • Reducing the tension on an item
  • Building a connection between two parts of items
  • Forming bonds in areas where you can't use super glue
  • Providing wrapping to bare wires
  • Fixing small water leakages

Bondic As a Filler?

Bondic can be used as a regular adhesive or filler. I found that when filling cracked plastic, it worked flawlessly and quickly!

You first need to clean and sand your item before applying Bondic so that the surface is rough enough for you to have adhesives stick properly to be able to use the item right away.

After that, start adding small quantities of Bondic and shining the UV light on top to cure. You do this until your surface is filled with material exactly how you want - for best results, use small amounts to avoid making one big blob mistake. Once you are satisfied with its shape, sand away any rough edges before polishing.

How Strong Is Bondic?

How Strong Is Bondic

There is no tensile strength information available for Bondic. Therefore, it depends on the individual repairs you create, as it will be determined by which materials are being bonded and how much of that material is in total or layered onto one another.

Bondic is a great adhesive for holding on to tough or rough surfaces. For the best bond, we recommend roughening up your area with sandpaper before applying it so that Bondic can properly sink into all those cuts.


Final Verdict

Super glue is incredibly strong, but it also dries quickly. You'll need to be careful about lining up your materials before applying this powerful adhesive- you can't just move them once they've been stuck by superglue!

It is important to be careful with the super glue. Touching fingers together could cause them to stick, so make sure you don’t get any on your hands!

I have found Bondic to be a much more effective adhesive than superglue. Once I had used my LED light to form the bond, all of my repairs had held well, although super glue was relatively weak when I applied a slight bend.

The Bondic adhesive is much safer and effective for use in various applications than super glue.

Bondic can be used in many different ways. It's most commonly known for its adhesive properties, but it also has fantastic filling capabilities that allow you to fix mistakes or gaps on projects. Overall, Bondic has been widely accepted and appreciated.

Written by Carl Browning

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