How Does UV Glue Work

As the name suggests, UV glue is a type of glue that is unique in that it requires exposure to UV light for it to cure.

That makes it quite akin to UV resin in its properties. UV glue is not glue but a polymer. Nonetheless, it serves the intended purpose of forming an unbreakable liquid bond. 

The role of the UV light in the entire process is that it initiates a photochemical reaction where it acts as the catalyst and causes the resin to harden up.

Usually, it takes just about three seconds for the glue to become hard. But in some cases, the glue might require exposure up to 15 seconds before it hardens up as expected.

It also makes for one of the most significant advantages of the UV glue, as the quick adhesion leads to better time efficiency in the entire process that the bonding is part of.

Users will also have better control over the adhesion process as it can be controlled as far as the UV light exposure to it is concerned.

How It Works

broken bracelet fixed with uv glue

It happens to be among the other positives of UV glue, given that it can be used to glue together almost anything.

That includes glass pieces, crystals, wood, or even metal. The glue is effective among the other surfaces, including leather and plastic.

Apart from joining different pieces, the glue can be used as a reconstruction material when you have a tiny piece missing. In much the same manner, the glue can be used as a filler.

In that role, the best thing to do will be to add the glue in layers. This way, the glue can fill gaps up to one centimeter without compromising the bond’s strength.

Another factor that makes the UV glue perfect as a filling material is its high viscosity. That way, the glue does not tend to drip or flow on its own and is also easy to apply on a surface. What makes the glue versatile is that it can be sanded or filed to even out the surface if needed.

Post that, the surface can be painted to attain the desired finish. What’s more, it can be drilled as well, with the glue serving as a strong base for the attachment of, say, a nail or other such pieces. 

Use Case Scenarios

phone charger

Any surface that might have suffered damage can be quickly and effectively repaired with UV glue.

All that needs to be done is apply the glue on the damaged area, followed by spreading it out to form a sheath of desired depth over the entire damaged portion. Once you are satisfied with the filling, simply exposing the glue to UV light will be enough to cover up the damage.

Since the glue is transparent, the repair work done won’t stand out and seem like an eyesore. You can also sand or file the repaired region to even out any irregularities.

It won’t impact the bonding of the glue with the surface. It is especially applicable in cases such as wood flooring that might have been damaged in some regions. 

Old wooden furniture can be provided a fresh lease of life with effective use of UV glue. Not only can the glue be used to fill worn-out regions, but it can also be used as a filler to prevent creaking and squeaking.

The repaired region will feel like hard plastic once cured thoroughly. The transparent nature of the glue is a huge advantage here as that helps in camouflaging the repaired region.

Such repaired surfaces also last long as they are incredibly resilient to vibrations and abrasions. It can easily withstand daily wear and tear and remain tight and firm for years to come.

The glue is resistant to most chemicals as well, which means you can subject the repaired objects to the same cleaning cycle using the same cleaning agents without fear of the glue getting affected.


uv glue benefits

Gluing together glass pieces is always tricky given the transparent nature of the glass and its smooth surface.

To glue such parts, you need to have something that can mimic the glass when it dries up. The UV glue fills the blanks most perfectly as not only it offers a smooth finish once it is cured, but its transparent nature can also make the glued region almost invisible.

The other inherent advantage of UV glue is its ability to cure almost instantly. In comparison, most other adhesives take a bit of time to harden, making the glass pieces extremely susceptible to getting dislodged from the optimum position. In the end, you almost always end up having a join that isn’t perfect.

None of that with the UV glue, as you have complete control over the entire curing process. It being glass, you can always focus the UV light from just about every angle, thereby optimizing the curing process.

Further, given that it takes just seconds to cure, it is unlikely that the broken portions will slip off from the actual positions. It also ensures a strong bond so that the repaired glass item will be as good as the original once it has cured.


broken windshield

All of the above discourse might make you feel UV glue is the perfect magic potion that can serve as a jack-of-all-trades sort of thing.

The UV glue truly is unmatched in its capabilities, from acting as a filler to repairing damages and gluing together broken pieces.

Unfortunately, it has its cons as well. Prime among those is that all of the benefits cited above comes for a price. While that isn’t anything to break your bank, of course, but is way higher than the typical most two-part epoxy or the white glues.

Apart from the price, another disadvantage with the UV glue is that they can also tend to pick up a yellowish tint over time.

Some users said the yellow tint became visible within just a year or two and can be hard to miss if it is in a visible region right away.

Wrapping Up

In the end, it is up to the user to decide whether to opt for UV glue and, if yes, to what extent.

While it does offer a solid and stable bond, maybe it is best to confine its use to those portions that won’t cat your eye right away. Else, it can be the best thing you will ever need if you are a DIY guy or for those who do repair work.