There is no shortage of uses for metal. That is why we at Cleaning King decided to give you this guide to the best glue for metal on different materials. Whether you are into woodwork, crafting, DIY, electronics, maybe even robotics, you will at some point need to work with metal.
For the longest time, most people have shied away from metal. I mean, who wouldn’t? After all, why put yourself through the hustle of welding and drilling through metal when all you wanted to do was to build or fix something quickly. Unless of course you are now an expert.
There is a strong misconception that metal cannot be glued together. Contrary to what you may think, there are glues that can bind metal to any surface just as strong as welding. So there is a quick fix should your metal object break.
Knowing how to glue metal can take your DIY projects to the next level. And the importance of knowing how to do so safely cannot be understated. Picture this; no more fiddling with welding machines and you can finish your projects in half the time. Sounds heavenly, don’t you think?
So now that you know you can actually glue your metal material, how do you choose the best glue for metal? The market is obviously flooded, and choosing the right metal glue is extremely important.
There are a number of questions that the Cleaning King team is going to answer for you in this guide. How do you know which metal glue is best for wood, plastic or rubber? Which brand has the strongest metal glue? How do you use metal glue safely and avoid gluing your hands together?
In this article, we are going to be reviewing some of the best metal glues for different materials in 2021. We will start with a buying guide so that off the top you are aware of what to look for as we move through the different products. This guide will also include information on the different metal glues available on the market for different materials and the things you should consider before buying the glue.
We will also add in some information about how to remove glue from metal because we all know that working with glue can be quite a sticky situation. Lastly, we have put our heads together and generated some FAQs to answer any additional questions that you might have.
Right, let’s get this sticky show on the road, shall we?
Metal is a very slippery and heavy material, the kind of glue you need has to be strong enough to counteract these qualities. Glues like epoxy or polyurethane have varying effects on the metal surface.
The worst thing that can happen when you are knee deep in your project is to have your object falling apart because the glue is not strong enough. Sure, super glue can work for most things, but once you have different materials, the game changes completely. Re-gluing objects frequently cannot be an enjoyable experience for anyone, and it can sometimes be a hazard in the home.
To avoid the frustration that comes from this, the best glue for metal must satisfy a few requirements. The team at Cleaning King has compiled a criterion that you should consider before buying the strongest metal glue. The buyer’s guide below lists several things that you need to be aware of.
The first thing that you need to decide is what surface you are looking at gluing together. Is it metal to metal, metal to wood, plastic, rubber or glass? These different surfaces have unique features that you need to be aware of. Some surfaces slow down the drying process of the glue, some quicken it. You need to be aware of all these issues. However, we will look at those aspects in detail later on.
For now, let’s focus on some general factors to consider.
Proceed with Caution-Some Red flags
Metal adhesives are a special type of glue. Metal presents very specific issues that need you to proceed with caution. As much as there is a lot of praise concerning the magic of gluing metal to different things, these glues are not a miracle solution.
One major challenge you might face is that;
An adhesive glue sits on the surface of the material. Simply put; your metal glue will not penetrate the surface of the material. Weathering and environmental factors such as heat, water and mechanical damage can affect how long your glue holds together. These factors will contribute to the lifespan of your bonding. You will not face this problem with welding or drilling.
The surface area of the objects that you intend to glue together is a very important factor. So is the weight of the object. You must be sure of the space that you want the glue to cover and buy a little extra as a precaution.
The shape of the item and the weight will affect the type of metal glue you buy and how you apply it.
You will also need to take into account issues such as spillage and re-application.
Metal glues come with varying drying or bonding times. Make sure that you read the instructions carefully so that you can assess how much time you will need for the glue to dry.
For repair work or DIY projects, fast-setting metal glues offer the best results within a short space of time, usually minutes. A key point to remember is that the longer the drying time you need, the stronger the bond.
Good time management on your part is essential. For example, if the metal glue takes two days to cure, then you must plan for the object to be untouched for those two days, as the curing process happens.
By definition, curing is a combination of chemical reactions that allow the glue to turn from liquid to solid and form a strong bond. The Cleaning King team recommends you look for a glue that cures quickly in as short a time frame as possible without compromising the quality and strength of the bond.
Since metal glues attach only to the surface of the material and do not seep into the item, the surface type that you are looking to use the glue on is an important consideration.
As we stated before, unlike welding or screwing the glue stays on the exterior of the material. Certain factors like the size, coarseness, cleanliness, or whether the surface is coated matter. Chemical reactions will in no doubt affect how your metal glue adheres to the surface.
Do not underestimate the effect that coating, smoothness and size have on your glue. What you will find is that your metal material will need a bit of roughening and preparation before you apply your metal adhesive.
Certain chemicals like acid pose a threat to the strength of your glue, so also take note that you read your cleaning ingredients and appreciate the effect they might have on your curing time as well.
Cleaning King recommends you consider the kind of environment your material will be exposed to. If it is a home project, will it be stored indoors or outdoors? Is there a likelihood that it might experience some mechanical stresses like vibrations or constant movement? It is a must that you ask yourself these questions.
The truth is; weakening will happen over time, you have no control over that. What you can control is how long a time frame you will have before the inevitable happens.
Certain factors like temperature contribute greatly to the durability of your metal glue. Some metal adhesives on the market can withstand high temperatures without their performance being affected. So ensure that you check the heat resistant qualities of the glue that you buy.
Mechanical stresses can also put pressure on the bond and weaken the strength that your glue has. So if the object that you are making or repairing is an item you use every day, expect that the glue might not be as durable. In this case, welding or screwing might be an option for you to consider.
Moisture and humidity have a role in metal glue durability as well. If your object is in constant contact with moisture and humidity, this will affect the curing time and the bond strength as well.
How many glue gone rogue stories have you heard? Probably plenty. That is why safety and user-friendliness as considerations should not be ignored. We do not want you sticking your hands together during this process.
Some glues are toxic and combine that with their runny consistency and fast drying capabilities you cannot afford to take a laid back approach when handling metal glue.
If you are new to this sticky business, we suggest that you start off with epoxy adhesives that are easy to use and non-toxic. Imagine the looks you’ll get if you somehow get poisoned by glue? That’s not something we would want on our track record. Kidding aside, glue toxicity is not a joking matter and can prove fatal.
Always read labels, always take special precautions when using glue, and most importantly always ensure that your glue is stored safely away from children and pets.
When some glues dry, they can be messy and unsightly with a very distinct color. An example of this is polyurethane glues. They expand as they cure, leaving an ugly mark behind. This will not be ideal if you are making a chic piece that you want to display, or if you are repairing your favorite glass ornament.
Some epoxy glues have a dark gray tint after the cure. If you want to avoid the headache of googling ‘How to remove glue’ (which we have conveniently addressed for you later on in the article) then make sure the glue you buy has a transparent finish. If however this article finds you late, do not despair, you just have to sand down the extra glue and paint over it. It’s as simple as that.
We can break up metal adhesives into four categories:
These types of glues are usually fast acting and easy to use. By far the most popular of the metal glues, they work on metal surfaces like door handles and handrails. Epoxy is one of the best adhesives for metal to metal bonding.
Epoxy is made up of resin and a hardener. The only challenging part about this glue type is that the resin to hardener ratio has to be applied perfectly. So following mixing instructions is key. They are fast-setting and have a high tolerance to heat and chemicals.
Be careful though, once you mix the two components, you have very little time to apply the glue.
These types of glues have a high adhesive quality that is perfect for use on metal. They require heat, so using it in a cold environment will slow down the curing process.
Polyurethane comes ready-made, so there is no mixing on your part. They are mostly water-resistant, making them a good option for application on any surface. The glue is nontoxic, so it is a good option if you are a beginner or if you want to use it on kitchen utensils.
They are easy to sand down, paint or stain unlike epoxy glues. The Clean King team recommends these glues for household items.
You have probably come across super glue at some point. There is a misconception that super glue is not strong enough to work on metal. This is untrue.
Most superglue brands can bond metal to most surfaces, including metal to glass. Of the three types, super glue has the fastest curing time. Once the glue comes into contact with air, it begins to cure. This makes it a more expensive option because you cannot store it for later use once you open it. So have that in mind if you choose to use super glue.
Methacrylate or MMA glues are a wonderful option for the lazy or busy individual. They require little to no surface prepping and can easily bond metal even where there is dirt, coating or dusty surfaces.
Forget what they say about dogs being man’s best friend. If you need a quick fix, these types of glues are your best friend. Hustle free and easy to use, we are all for it!
Now that we have given you a guide on what to look out for when you choose the best glue for metal, let’s begin our metal glue review.
Steel has so many advantages. It is highly resistant to heat, corrosion and oxidation, making it durable and very affordable. We use steel in a number of industries but more commonly in medical instruments, automobile industry and so many more.
If you’re after an epoxy that will glue metal steel and provide impressive results, then this product from J-B Weld is it. With two separate containers for the resin and the hardener, it is extremely user-friendly.
Setting within 6 minutes, it is the perfect solution for a quick fix that is a permanent fix. The total time for curing is four to six hours. We consider it as a slow-curing metal to metal glue. This means that you can change it after it has cured. Once cured, you can mold, paint, drill and sand it to your preference.
This metal glue from J-B Weld can be used either inside or outside. The tensile strength is a whopping 3127 PSI, making it extremely durable.
Whether you are a DIYer or you just need something fixed in your home, why not take this baby for a spin? This heavy duty epoxy adhesive will blow your mind.
Glass is a very fragile material, so you need to handle it with the utmost care. When gluing glass to metal, an epoxy based or super glue is a great option. Epoxy based glues give a powerful bond and you have more time to place your glass and metal pieces together without worrying about rushing before the glue dries. This gives you more time to do a perfect job.
For gluing metal to glass we chose the Permatex 80050 clear RTV as our best pick. This silicone adhesive sealant provides a permanent bond for your metal to glass projects. Rated as a must have in your toolbox by customers, you will not go wrong if you decide to loosen your purse strings.
Though glass is very beautiful and pleasing to the eye, it isn’t an easy material to work with. The shiny and slippery surface makes it a bit challenging for most adhesives to bond to it effectively. And when you add metal into the picture, you are likely to drive yourself nuts if you are not careful about the type of glue you pick.
The Permatex glue is the right product for this slippery job. It comes with a tube that has an attachable tip for easy application. The glue dries clear and is both weather-resistant and waterproof.
As we have already pointed out, gluing metal to glass can be tricky, but if you follow the directions that we have put together below, it should prove to be a fairly straightforward process.
The best thing to do is to first identify which metal glue you are going to use. This will determine the steps that you have to follow. Some adhesives will require a clamp so that the glue holds better, some will not. However, given the nature of the material that we are dealing with, we advise that you use clamps regardless of the glue you use. Extra precautions never hurt nobody, anyway.
Before starting, you need to make sure that you clean both surfaces of any dust particles or rust. You will need a pair of gloves too, since you will be handling glass. This will prevent any accidental slippage of the glass should your bare hands get sweaty.
Read the instructions of your metal glue and make sure you understand them enough before you use the glue.
Apply the glue evenly over the area that you want to bond together and use clamps to hold the pieces together. Make sure that you don’t leave any oil or sweat on the glass because this will weaken the bonding.
Wait for the glue to cure properly before you move the items around. Be extra careful so that you do not accidentally break the object.
After giving the glue enough time to cure, you can perform a stress test by using various methods such as adding weight to the joint to see whether it can survive the pressure. Or if you are pressed for time, you can just leave it and see if it breaks with time.
Metal and wood differ greatly in their composition, so we have to select the best product that will work well with both metal and wood. Wood is light and metal is heavy, the glue that we chose as the best for both materials is able to address the different textures.
This is our number one pick as the best glue for bonding metal to wood because of the special rubber formula that the manufacturer used to toughen the glue. Wood is porous and metal is not. This Loctite Ultra Gel super glue is capable of overcoming this difference and gives you a solid hold.
The glue is fast drying, and it is impact, shock, moisture, vibration and temperature resistant. If you are looking for an all in one glue for use, this is it. You can use it indoors and outdoors without batting an eyelid. As far as durability goes, you will not go wrong with this metal to wood glue.
Though it is fast drying, it will give you a chance to align your pieces together before the curing is complete. This combined with the fact the packaging is specifically designed for an easy squeeze makes it a great option in our eyes.
As we have stated before, metal and wood are very different materials. However, if you follow the following steps, you will not have much trouble gluing metal to wood.
You will need to ensure that both your wood and your metal surface are free from dirt, dust, rust, grease, oil and any other chemicals or particles that might negatively interact with your glue. If necessary, find a cleaning product that can remove any stubborn stains.
Make sure that you carefully read the instructions on your packaging label. If you need to be in a well-ventilated area, please ensure that you follow all the safety precautions.
Additionally, make sure you know the setting time so that you are not stuck trying to use glue that has already hardened.
This is the moment of truth. Since wood is porous, it means it can absorb any material easily. The first step is to use a sealant on your wood surface to prevent it from soaking up the glue. You can skip this step if your glue is both a glue and a sealant.
Once both surfaces have been prepped and are ready, you have two options depending on the type of glue you have.
The first option applies if you are using an epoxy glue that needs mixing. You need to put the glue onto a different container that you will use to mix and then apply it equally on your two surfaces.
If your glue does not need to be mixed beforehand, then you can apply on both materials and use temporary supports to hold the surfaces together depending on the size of your surfaces.
Make sure not to put unnecessary pressure on the bond by moving it around for at least an hour.
Leave it to cure for the time frame that the manufacturer has stated.
No two materials could be as different from each other as plastic and metal. But that should not stop you from trying out projects that involve both materials. The team at Cleaning King did all the research for you and we found that the best glue for bonding metal to plastic is an epoxy based glue.
Epoxy is able to resist common solvents, chemicals, water, and high temperatures. This makes it a great option if you are planning on bonding metal to plastic.
Gorilla is a very prominent brand in the glue industry known for producing some really strong multi-purpose glues. This product is no different.
This epoxy metal glue has a syringe style packaging that makes the application process a breeze. The resin and the hardener are separate, and the syringe design helps in the mixing process. This added flexibility means that you can single-handedly mix the right ratios with no help.
Equally important is the fact that the glue gives about five minutes before it begins to cure and harden. This extra time is very helpful if you are still figuring out exactly how you are going to glue your plastic to the metal.
What we love the most about this product is that it is transparent after it completely cures. This is a perfect feature when you are using plastic. It can be sanded down after the twenty-four curing period is over. It is water, heat and solvent resistant, meaning you can use it indoors or outdoors. In our opinion, this is one of the most durable plastic to metal glues.
Metal and plastic are both quite difficult to bond, let alone bonding them together. If you choose the wrong glue and the wrong application steps, you might end up with a very sticky and messy glue nightmare.
Here are the steps you need to take to glue metal to plastic.
If you don’t already, knowing the type of plastic you are dealing with is essential in making your journey easier. Not all plastics are created equal. Some plastics have a surface area that is extremely adhesive resistant (low surface energy LSE plastics), meaning that your glue might have a hard time forming a bond on the surface. Examples of such plastics include;
If you want to avoid a headache, either choose a glue that will bond with these materials or opt for high surface energy (HSE) plastics such as;
With bonding materials that are so different in their composition, certain environmental stresses have to be taken into account before you begin the application process.
For example; the expansion and contraction of the material because of temperature change.
The first step is to prepare the materials by cleaning them. With plastic, you must make sure that the surface area is clean from any contamination and mold release. An alcohol wash such as Isopropanol can do the job.
The next step is to test on a small surface area whether your glue is the appropriate one. This step is very helpful if you are doing an important project or repair.
Once you are satisfied that you are on the right track; follow the instructions on your glue of choice. If you are using our best pick, you should take the following steps;
Metal is stiff and dense, and rubber is very flexible and light. The best glue for metal to rubber is one that is specially designed to withstand the complex bonding issues that are presented in this situation
Bonding metal to rubber needs an adhesive that has super bonding qualities whilst not restricting the flexibility of the rubber material. This is what you will get with the Gorilla Glue clear contact adhesive. This glue is perfect for bonding together the metal to rubber without the risk of glue failure.
This Gorilla contact adhesive is our # 1 choice for the best glue for metal to rubber because of its quality and durability. Gorilla Glue has an excellent reputation in the market. They are one of the best glue manufacturers.
The qualities in this product are a reflection of that. The company markets this contact adhesive as being quick drying, flexible, waterproof with a strong and permanent bond. You cannot go wrong with a Gorilla Glue product, it is a good arsenal to have in your quiver or DIY arrows.
The tip is user-friendly, allowing for even the most inexperienced hand the opportunity of a neat job. If you are after a durable bond that will keep the rubber and metal in place, this is a solid choice!
Rubber is a versatile material and when you combine it with metal, the potential for complications when it comes to gluing double. Nevertheless, do not fear, because the Cleaning King team dug up some tips for you that will help you learn how to glue metal to rubber. It can be as easy as ABC!
There are some general rules that you need to be aware of that affect the adhesiveness of rubber. The rules are as follows;
Rubber comes in many forms, many of which the average person is not aware of. We compiled a list of some of the most common rubbers that you might come across. This list can be very useful, especially when you embark on a project from scratch.
When you have identified the type of rubber and metal you have through your own research or with the help of an expert, the next step is to prepare the surfaces.
Your rubber material can have coats of different contaminants on it, such as slip additives to name one. The Cleaning King crew advise that you prep and clean the area with an alcohol cleaner like Isopropanol.
You have to proceed with caution when using metal to rubber glue, because certain rubbers have a plasticizer that can at times weaken the bonding strength of your metal glue as time goes on. Always do thorough investigations before you decide to bond metal with glue.
These must be the easiest materials to bond, surely? Well, not exactly. As with the previous materials, you still need to do some research to figure out which glue is the best for metal to metal bonding. Luckily for you, we have you covered.
The best glues for metal to metal bonding are epoxy based. There is no doubt about that. The benefit of epoxy glue for metal surfaces is that it is very durable. Epoxy glue is strong, waterproof, heat resistant and can withstand tremendous amounts of pressure. So if you have an enormous surface area to cover or your item weighs a ton, then epoxy is your best bet.
This wonderful product from Permatex tickles us in all the right places. It is flexible, multipurpose and cheap.
Whether you are working with stainless steel, copper, aluminum, brass, chrome or iron, the metal to metal glue is the best in the business. It can be used to fill in cracks or gaps, and if you are not too keen on its natural finish, you can sand it down or paint it to your preference.
It has a very strong bonding quality, it is water-resistant and does not interact negatively with solvents. As the name suggests, it sets in four minutes and because of its super strength you can afford to forgo using clamps.
If you are not keen on welding or drilling through metal, this is your best alternative. The dark gray color is a plus because it means it can blend into most metals seamlessly.
This is generally a simple process, especially if you are working with metals that have relatively the same composition.
You should clean the surfaces using a degreasing agent or a detergent. If there is any rust or weathering, then sanding or scraping is an appropriate method to prepare the area for bonding. This will get rid of any unwanted particles. Thereafter you can use sandpaper to make the surface a bit coarse, this helps the metal glue to adhere properly to the surface of the material.
Apply the metal glue to the surface as directed on the packaging of your glue. Make sure that you are working in a well-ventilated area to ensure you are not inhaling toxic fumes from the glue.
If you are working with epoxy, you will need to mix equal portions of the resin and the hardener before you apply. You then leave the items for about an hour so that the glue sets. If you want to use clamps, you can. Wait at least twenty-four hours before moving the object.
If you decide to go for polyurethane glues, you will have to clamp the parts together for no less than two hours. Because of their need for moisture to set, these glues have a hard time filling gaps and closing cracks, hence the need for the clamps.
If you use super glue, the instant bonding is a bonus. All you need to do is apply a small amount to one part and place it together with the other piece whilst you hold it down for a few minutes. We recommend using these types of glues for small objects.
Once the glue has cured for the required time, you can neaten up the area either by painting over it or using sand paper.
It goes without saying that glue handling does get slimy, no matter how careful you try to be. The Cleaning King team knows just how challenging glue messes can be. Things can get really untidy and accidents happen, especially with DIY projects.
Unless you have somehow managed to glue your hands or feet together, these tips should be able to assist.
Removing overflow or runny glue off any metal surface requires careful planning and attention. So no matter how experienced you are, always make sure all your glue removing tools are nearby before you start working.
Glues have evolved over time. It was once unthinkable that an object as strong and durable like metal could be bonded permanently by a liquid or gel substance. The great thing about the current products that we have shown in this guide is that you have so many qualities and functions that will take your DIY and repair experience to a whole new level.
The best glue for metal is one that can stand the test of time. For us, the one to beat from our list is certainly Epoxy resin based glues. The value for money is unbeatable, and the thousands of reviews are a testament to that.
By far, epoxy resin glues are the strongest on the market. They are versatile, but most importantly they are durable. When it comes to the debate of gluing versus welding epoxy glues come up on top for a number of reasons.
They are cost effective, easy to access and use, and they are a great time saver. Of course, if you are embarking on a big metal project, you will need to incorporate some welding. But epoxy will work just as well.
Epoxy is also a gap-filler, making it perfect for home use. It can be painted, drilled and sanded. No other glue in our list has the range in resistance and use as epoxy that is why we at Clean King have chosen it as the overall best glue for metal.
We hope that our guide to the best glue for metal has been helpful to you and that we have dissuaded any fears or misconceptions that you might have had.
A great repair or DIY experience awaits you. Hopefully, one that will not be sticky. What are you waiting for? You have nothing to lose.
In general, all metal adhesives should possess the following qualities:
Jewelry is an item that is worn quite frequently, and it is prone to breakage at some point. For a firm hold that can stand the pressure of everyday use, we recommend Epoxy based glues.
Super glue will not work on paper because paper is very porous and gets easily soaked. If you use superglue, you are not only wasting it, you could end up with a very chaotic situation.
The answer is yes. Typically, manufacturers are forced to write a two-year expiry date because of legal regulations. Unless the glue has changed color because of other issues like storage, our guess is it’s still good to use and will work the same.
Several factors can affect your epoxy curing process. The first suspect is usually that you did not mix the parts correctly. The second issue could be environmental factors like the temperature in the room that you used to cure your epoxy. Optimum temperature is a must if you are going to cure epoxy properly.
Yes, because toughened super glue or rubber toughened glue is designed to withstand a lot of shock. These types of glues are capable of resisting very high and very low temperatures. We recommend them for outdoor environments.
In some cases. Spray adhesives are a good option if you intend to cover a very large surface area. They are also an awesome option if you intend to bond metal to fabric. The spray is gentle enough to cover the thin surface area of the fabric.
The world’s strongest adhesive is made by a company called DELO. It is in the Guinness World Records. You can read all about it by clicking this link.
This acronym stands for pound/pressure per square inch, and it measures the force or pressure that the glue can withstand without breaking or weakening its bond. The higher PSI, the better the bonding strength.