How Much Weight Can Hot Glue Hold?

The amount of weight that hot glue can hold depends on several factors.

However, it can typically hold more than 10 pounds. This is more than enough for decorative models.

So, how much weight can hot glue hold?

If you’re like me and you’re a science and engineering buff, then you’ve probably wondered, “How much weight can hot glue hold?” Well, the answer may surprise you.

Hot glue can hold up to 11 pounds! Not only that, but hot glue is reusable and recyclable.

It’s made out of a thermoplastic polymer called cyanoacrylate, which is also known as CA glue. In fact, CA glue has so many uses that NASA uses it for fixing airplanes in space.

CA glue bonds to surfaces almost instantly and can withstand temperatures of 250 degrees Fahrenheit (121 degrees Celsius). It’s also resistant to acids, bases, alcohols, and solvents, which makes it perfect for a wide variety of uses.

Hot glue can even be applied to wet surfaces! With its many uses and incredible strength, it’s no wonder that hot glue is the go-to adhesive for craft projects.

How Much Weight Can Hot Glue Hold?

Hot glue can support a lot of weight; in fact, it can even support the weight of a car.

One guy even attached two trucks together with a layer of hot melt adhesive.

He was able to tow both vehicles at the same time.

If the surface is porous, such as wood, the glue will sink into the material instead of bonding to it. If this happens, you can coat the surface with wax or petroleum jelly to help the glue adhere to the surface better.

Is Hot Glue Very Strong?

Hot glue is very strong once it has dried; however, if you apply too much pressure before it dries, the bonds can break. When this happens, you can remove the dried pieces of the bond with a chisel.

It can support a weight of about 11 pounds per square inch; however, most projects won’t require this much pressure to be exerted on the bond.

How Strong Is Hot Gun Glue?

Hot glue is a thermoplastic polymer called Cyanoacrylate or CA, which bonds to surfaces instantly and holds together at temperatures of up to 250 degrees Fahrenheit or -121 degrees Celsius.

This fast-drying adhesive is ideal for crafts because it can be used to adhere materials to each other almost instantly while holding up under heat and stress.

Because it has such strong holding power, it can be rather difficult to remove once it has dried.

Before gluing, apply a coat of paint or other protective coating to the surfaces that will be glued together so that the hot glue gun does not burn the finish of the surface.

Another approach is to use hot glue sticks rather than a hot glue gun when bonding small items.

Factors Influencing Wood Glue Strength

Oily Wood

Certain woods have greater amounts of natural oils than others.

These oils make the wood less receptive to adhesives; as a result, a stronger adhesive must be used in order to achieve adequate adhesion.

Conversely, oily woods can be more easily stained than other types of wood; this makes it possible to obtain the desired color without using a stain stripper before staining the wood.

Some types of oily woods include teak, walnut, oak, cedar, mahogany and pine.

These chemicals often leach out of the wood and into the stain; these chemicals interfere with the stain’s ability to penetrate the pores of the wood and absorb into the grain of the wood.

As a result, the appearance of the finished piece may not be satisfactory; some colors may not penetrate deeply enough into the pores of the wood and appear blotchy.

Therefore, it may be necessary to sand the surface of the piece of wood before applying the stain so that the chemical film on the surface of the wood is removed.

As a consequence, the joints between the pieces of the wood should be sealed with glue or epoxy before staining.

This allows the wood to breathe and for the moisture that is present in the air to evaporate through the joint rather than soaking into the interior of the.

Porous Wood Surface

The grain at the ends of each piece of wood is usually different from the grain at the middle and edges.

Crosscuts done perpendicular to this grain are called quartersawn or rift cut, while those made parallel to the endgrain are called flatsawn or plain sawn.

As a result, you often encounter end-grain surfaces in furniture construction.

End grain is very resistant to changes in moisture content because it doesn’t expand as much as other types of wood when exposed to water.

As a consequence, the outer layer of wood may dry before the inner layers do, causing cupping (surface warping) and cracking in exterior applications.

Woodworkers often cut angles into the edges of boards to obtain additional strength by taking advantage of the long fibers of the wood’s cross section.

Adhesive may then attach to less porous faces of grains rather than to the pores of the open grain structure, leading to higher glue-line shear strength and improved joint durability.

Another alternative is to reinforce the junction between adjacent pieces of lumber with mechanical fasteners, such as nails or screws.

Clean Surfaces

Ensure that the surfaces to be glued are clean; dust and dirt can prevent adhesives from adhering properly to the surfaces.

Any particles that adhere to the surface should be removed with a vacuum cleaner. Use soapy water and a scrub brush to clean off any remaining debris on the surfaces.

Sanding is also a good way to remove loose material from the surface; use a coarse grit sandpaper to remove any remaining paint or other coatings from the surfaces of the pieces to be glued together.

You may usually get rid of paint by sanding the surface, but you will need to sand it several times to remove all of the paint and any stains that may be on the surface.


The total binding strength of an adhesive increases as the temperature increases; therefore, the glue must be applied while the pieces are at room temperature.

After applying the glue, the pieces must be allowed to warm up to room temperature before they can be bonded together.

Also, if the temperature drops below room temperature while the pieces are still wet, the glue can harden too quickly and the pieces may not be properly bonded to each other.

If this occurs, you can reheat the pieces.

Follow the manufacturer’s instructions for the proper temperature at which to apply the adhesive; however, most adhesives should be applied when the pieces are at room temperature.

In the winter, you may need to heat the work area to about 70° F or warmer so the glue will bond better to the wood.

Type of Glue Used

There are several types of glues that can be used to glue boards together: water-based and solvent-based adhesives; contact cements and polyurethane glues.

Some are more forgiving than others.

However, using the strongest possible type of adhesive is recommended because boards sometimes move a little in shipping and when nailed in place.

Other adhesive qualities may need to be considered such as temperature resistance, water resistance, fire retardancy, etc.

The majority of woodworkers prefer to use water-based glues because they emit little or no fumes and they are easier to clean up than solvent-based adhesives.

However, not all water-based products are equal; some are stronger than others. Therefore, it is recommended that you use a high-quality product when you assemble your wooden projects.

They are simple to cleanup with water after they are dried and they clean up most other common woodworking materials such as sawdust and wood shavings as well.

Water-based polyurethanes are the best choice for outdoor projects because they are resistant to water and ultraviolet rays from the sun.

Polyurethanes also dry harder than other water-based products so they are less likely to shrink during drying.

They also tend to be more expensive than other water-based products. Water-based contact cements are also strong.

Some are exclusively used for glueing wood together, while others can be used for gluing wood to other materials such as metal, glass, or plastics.

Others can withstand higher temperatures and can be used in applications such as plastic laminates, foam insulation, and fiberglass insulation.

Others, on the other hand, have adhesives that bond quickly with surfaces such as paper or cardboard but will not adhere well to other materials.

What Is the Strongest Type of Hot Glue?

Cyanoacrylate adhesive, popularly known as superglue, is the strongest type of hot glue available.

Superglue is the brand name for a trademarked version of cyanoacrylate, which is a trademark of Henkel Corporation. There are several formulations of superglue available on the market today.

Some are designed for industrial use while others are formulated for use in hobby shops or home workshops.

Some of the trade names for cyanoacrylate include Krazy Glue, Crazy Glue and Zap-A-Gap.

It establishes a strong binding between materials quickly when it is applied correctly.

This glue is produced using a chemical reaction between a monomer and a catalyst to form an adhesive or polymer that is insoluble in water and that hardens when exposed to air.

It is also water and liquid resistant, making it useful for bonding metals, plastics, ceramics, glass and other non-porous materials.

The polymerization process also creates a small amount of heat as it cures, which also helps strengthen the bond between the materials being glued.

Cyanoacrylate can bond with almost anything that it comes in contact with including itself once it has cured.

For this reason, it is important to apply the hot glue gun slowly and precisely to avoid getting the glue on anything you do not want it to stick to.

Also Read: Does Hot Glue Stick To Aluminum Foil?


In conclusion, hot glue can hold up to about 2kg/4lbs on flat surfaces. On curved surfaces, it can hold up to 1kg/2lbs. However, hot glue is often not as strong as it seems, so it shouldn’t be used to hold up heavy objects.

When used appropriately, hot glue can be an effective adhesive for many applications around the home and workplace.

By using the proper application methods, you will increase the lifespan of your hot glue gun and prevent the build-up of glue between its nozzle and its tip.

Finally, hot glue can stain certain materials if applied too heavily or for too long a period of time.

This makes it an excellent glue for attaching items to cardboard or wood – but be careful when applying it to other materials that you don’t want to permanently mark.

When working with hot glue, exercise care and caution to prevent burns and other injuries from occurring.

You can assure the success and accuracy of your gluing project by following the proper steps in preparing your project and applying the glue properly to the object you wish to attach.