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An Overview of UV Light Glue

Updated: May 2021

What is UV Glue?

Ultraviolet glue uses a photochemical component, an ultraviolet light, for curing. UV consists of electromagnetic radiation in wavelength ranges of 10 to 400 nm (750 THz). That’s shorter than visible light, but longer than X-rays. In that way, this glue is a polymer which relies on ultraviolet lighting for cross-linking and creating a durable and solid foundation at a molecular level.

This contrasts other adhesives. Those adhesives typically rely on drying, a process that requires high temperatures or takes long periods of times. But with a UV solution, adhesive components overcome any needed activation energy needed for cross-linking and photon particles.

How Does UV Glue Work?

Ultraviolet adhesives come in varying packaging. Most are epoxy based. Acrylates are popular products too. You also have access to multi-component solutions with photochemical promoters. These degrade into free radicals after UV light exposure. The radicals significantly increase speed rates of UV glue curing.

UV curing is in heavy use in large scale industries where products like cosmetics, food, autos and medicine are manufactured. The chemistry behind UV adhesives is also utilized in the production of UV curable inks.

Thanks to its relatively quick process as well as the absence of solvents, UV curing is deemed an adaptable solution if you want a highly flexible, fast production.

Fields of Ultraviolet Light Curing

UV light adhesives are incredibly versatile. It’s used to join different materials, but as a safeguard, filling and reconstructive solution. Should you need to join two uneven surfaces, you have the facility to level out the unevenness by applying the adhesive densely without filling gaps.

Applied in layers, an ultraviolet light curing product has a one centimeter gap filling effect. It can be applied to reconstruct a range of materials. This is especially suitable when sheathing low current cables or to replace small object fragments.

This solution is exceptional for:

  • Metal
  • Leather
  • Wood
  • Crystal
  • Glass
  • Plastics, especially transparents

UV curing adhesives are not suitable for PE, PP and PTFE.

Repairs of All Kinds With UV Light Adhesives

A UV glue enables stabilization of adhesive joints. It is also suited for repair and as a filling material. As UV light isn’t not aggressive like other adhesives, it’s exceptional for sensitive materials. Further, UV glue contains no solvents. The solution’s suitable for modeling.

Small surface damage is easily corrected with UV adhesive. Apply the adhesive to cracks. It’s transparent and feels like hard plastic after curing. You’ll find once the project’s complete, the repair is near invisible. It’s also a practical solution for repair areas that need high levels of vibration.

Repairing Floor Coverings

Floor covering damage is infrequent but it happens. Especially in households with children or pets. Broken glass and claw markets make your floors less attractive. There is an alternative to replacing sections of floor or tearing it out entirely. Try repairing the damage with a UV glue. Fill the scratch or crack with the solution and cure it with the UV lamp. To level the application, sand the dried adhesive.

UV Adhesives

Sealing Drill Holes

The best and fastest way to correct annoying drill holes is to fill them. They are a major aesthetic problem. Unfortunately, using typical adhesives can entail long drying times. Tiles are an excellent example of this.

When drilling holes are unavoidable, you can use UV light to correct this matter efficiently. UV light will eliminate issues of color tone. This is always a difficulty.

Adhesive UV lighting is the ideal solution here. It comes in practical tubes for precision application. The pot life is freely selected. This means the area’s easily repaired with no fuss or muss. After hardening, the surface is ready for filing, polishing or grinding. The project’s completed in no time.

Ultra Violet Light Drill

Gluing Glass

One difficult fix is glass bonding. It’s a challenge because the material is a sensitive surface and highly susceptible to more damage. A majority of adhesives aren’t engineered to work with these properties. Gluing glass to glass is a tricky endeavor, but keeping glass in place with most materials can be a problem for the DIY-er.

Bonding two unique surfaces is a further problem, especially while waiting for the solution to dry. While waiting for this, you’re responsible for holding components together. They can slip. This is a common problem with glass, which can also break or splinter under stress.

UV adhesives lets you control the curing process. You’ll never worry about slipping because there’s no waiting period. Another advantage is glass’s transparency. It can be exposed to UV light on either side, front or back. This ensures the adhesive is fully developed and bonded. That makes ultraviolet light perfect for glass.

UV Light Gluing Glass

UV Adhesive Tutorial: Repairing a Surface

Here are the steps for most UV adhesives.

  1. Thoroughly clean surface to be bonded. It has to be free of dust and grease. The surface should be completely dry as well. Use a lint-free cloth and pure alcohol. Smooth surfaces may need roughening so that the adhesive develops optimal potency.
  2. Apply the adhesive. You can use several layers to fill holes and grooves.
  3. For better bonding, prepare the surface with a thin layer of adhesive. After drying, apply a denser layer to optimize glue properties.
  4. Bond surfaces and use the ultraviolet light to cure the adhesive.
  5. If light isn’t reaching everywhere, press components together firmly for thirty seconds.
  6. After curing, process the adhesive mechanically, such as grinding.
  7. The surface can now be painted or varnished.

If at any point during the project you’d like to remove a UV adhesive, apply petroleum ether before the adhesive has cured. Already hardened adhesive can be soaked with soapy water.

Storage of UV Light Glues

To manage the durability of the product, keep it stored in a cool, dry place while it’s still sealed. Keep storage temps between 5°–25° Celsius. Open containers are best stored airtight in the refrigerator. Remaining contents should be used immediately.

Instructions for Safe Process of UV Curing Adhesives

In order to safely work with UV adhesives, use proper safety precautions. You want to protect the workplace and the user. These products are capable of prompting allergic reactions, impacting the respiratory tract, and irritating skin and eyes.

Wear gloves and goggles when using these applications. Always work in well-ventilated areas. If this isn’t possible, wear a respiratory mask. If the adhesive comes in contact with eyes or mucous membranes, get medical attention immediately.

With proper safety measures, a UV adhesive is highly versatile and worth the higher price. It’s becoming the resource for a variety and industries and for DIY-ers.

Pros and Cons

  • This curing adhesive is extremely resistant, durable and eco-friendly with loads of all kinds.
  • The pot life is manageable on an individual basis. A UV adhesive product like Bondic® UV won’t cure until it’s exposed to a precisely defined wavelength of UV light.
  • The bond will be resilient and durable.
  • It takes between a few hours to 24 hours for the adhesive to reach its final strength.
  • With a dependable solution like Bondic® UV adhesive, you can model bonded areas at your convenience. Can be processed further mechanically after curing.
  • It’s suitable for in- and outdoor application.
  • Ultraviolet curing adhesives like Bondic®, available in a practical cartridge, are easy to use out the box.
  • This solution is sensitive to bonding point soiling. Thorough cleaned prior to bonding is critical.
  • The adhesive isn’t suitable for large surfaces as bonding points that can’t come in contact with UV light will always be a potential weak point.
  • Wood and other absorbent materials only hardens and sticks to surfaces, so the adhesive will not reach deeper layers.
  • This adhesive is more expensive than other products.

Top UV Activated Glue

There are a number of reliable UV activated glues on store shelves and score well. Do your due diligence and research the ones think may be best for you. We do believe we can steer you in the right direction.

In this article, we’ve looked at what the UV activated glues should do and what happens when they don’t. We tested the market’s top products looking for the one that stood above the pack. What follows is what we see as the clear winner and the best UV adhesive your money can buy.

The world’s first liquid plastic welding application, Bondic® is unlike other adhesives. It’s a liquid and won’t dry out and harden. You can use it to fill gaps, replace missing or broken components, making molds and managing control bond strength. Use to repair car parts, for sealing products to prevent water damage or to fix dishes.

Like the best adhesives, Bondic® liquid plastic welder is safe on objects commonly exposed to water. This includes leaky and broken pipes. It’s an excellent alternative when you need a quick fix and you’re low on funds for a plumber. You can use Bondic® in swimming pools.

It’s an excellent solution when you’re dealing with high temperatures. Whether you’re looking at a wobbly oven rack or a button’s falling off your floor heater, Bondic® can reattach it. You’ll never have to worry about the adhesive weakening or that button falling off.

Bondic® is easily the most versatile and resilient UV adhesive in the batch. Its connection lasts significantly longer than other applications. The solution is also one of the fastest we’ve seen. You can stop applying adhesives and going to bed. Bondic® can be used in the middle of the day. No waiting. The UV glue hardens in seconds.



  • Full cured, Bondic® is 100% waterproof.
  • It is heat resistant.
  • The solution dries clear.
  • After hardening, you can paint or sand the surface.
  • Operation is simple with an incorporated LED UV light’s button.
  • When exposed to ultraviolet light, the product cures to a permanent bond in seconds.
  • It’s a solvent-free formula.
  • Remaining contents in the container, unlike most adhesives, will never dry.
  • Pot life is determined by the user.
  • The curing process only goes through after irradiation with LED light.

Bondic® is fast becoming the go-to for electricians, mechanics, DIY-ers and craft enthusiasts. We found it makes a quick and fast answer for interior or exterior adhesive projects. The product’s water resistant, heat resistant. You can use Bondic® to fix practically anything and leave no traces of the work.


  • Bondic® is the solution for, to name a few, rubber, ceramic, metal, PVC, steel, Kevlar, plastic, wiring, figurines, polypropylene, vinyl, wood, leather.
  • Use for smoothing and filling materials with small cracks and damages.
  • Product includes LED light that’s integrated into the glue tube. Batteries are also included.
  • Easy to use.
  • price: $19.99

Compared to some solutions, Bondic® may seem higher priced. But we considered the many varied applications and effectiveness for the glue compared to other adhesives. Each time Bondic® came up on top.

BONDIC Unboxing and First Impression

Final Thoughts

UV adhesives are the next step in bonding and repair. They’re versatile and flexible with an unlimited workability and fast curing. UV adhesives have made believers out of a variety of professional craftsmen and DIY enthusiasts. If you plan to employ UV glues in the long term, invest in a quality ultraviolet solution, one with a range of intensities and frequencies is the only way to go.

Written by Adam Moreno
With the continual development and increase in technology, gadgets, and gizmos, Adam never has a dull day researching new gadgets. Being an enthusiastic gamer, traveler, soccer lover, and avid car driver means that he always looks for the next cool thing to try out.
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