May 22, 2022 11 min read

How to Cure UV Resin Without UV Light: Easy and Effective Methods

Discover the secret to curing UV resin like a pro without UV light! Unlock stunning results in minutes with our expert guide. 

How to Cure UV Resin Without UV Light

Yes, UV light is amazing. Yes, everyone trusts it and sings its praises. But what if you want another curing experience? Some worthy alternatives offer the right satisfaction with impressive results.

Curing resin to an even solid state can be tricky; if you’ve dipped your hand in the resin a few times, you’ll find that UV light is a device on demand. Typically, most people use UV light to cure the resin, but multiple options guarantee similar results. 

Before we dive into the alternatives, it's important to understand how UV resin cures. UV resin containsphotoinitiators, which are activated by UV light. This activation causes the resin to solidify and cure. Without UV light, the photoinitiators won't activate, and the resin won't cure. However, there are a few ways to work around this and cure your resin without UV light. What’s important is that you follow the right instructions to guarantee the results you anticipate. 

Key Takeaways

  • There are alternatives to curing UV resin without UV light.
  • Getting a well-rounded idea of how UV resin cures is important in finding alternative curing methods.
  • Curing UV resin without UV light is possible using heat, natural light, or a curing agent.

UV Resin - What is It?

UV resin is a form of resin that is cured by exposure to UV light. It is popular for various applications such as jewelry making, model building, and more. Different types of UV resin are available in the market, including epoxy resin, polyurethane resin, and polyester resin.

When exposed to UV light, the polymerization process activates the hardening substance in UV resin. The polymerization process causes the liquid resin to solidify, creating a strong and durable adhesive.

UV resin is easy to apply and is compatible with multiple surfaces, including glass, plastic, and metal. It is also ideal for small projects requiring quick and easy cure time.

Overall, UV resin is a versatile and convenient option for those looking to create small crafts or repairs without the need for traditional curing methods.

The Curing Process of UV Resin

UV resin is a popular material used in various applications, including jewelry making, 3D printing, and model making. While UV light is the most common way to cure UV resin, it is not the only way. This section will explore the curing process of UV resin without UV light.

The curing process of UV resin involves a chemical reaction that is triggered when the resin is exposed to certain catalysts or hardeners. The chemical reaction is known as aphotochemical reaction, which means it is triggered by light. However, the light source does not have to be UV light.

One way to cure UV resin without UV light is to use ahardenerorcatalystthat does not require UV light to initiate the chemical reaction. Epoxy, glues, and inks are some examples of materials that can be used as hardeners or catalysts.

The curing time of UV resin without UV light can take longer than when using UV light. The time it takes for the resin to cure depends on factors like humidity and the curing area's temperature.

To ensure that the curing process of UV resin without UV light is successful, following the manufacturer's instructions is essential. The instructions will provide information about the recommended hardeners or catalysts and the curing time required.

While UV light is the most common way to cure UV resin, it is not the only way. You can successfully cure UV resin without UV light by using the right hardeners or catalysts and following the manufacturer's instructions.

UV Light and Its Role in Curing

UV light is a form of electromagnetic emission with wavelengths shorter than visible light. It is a powerful energy repository that can cause chemical reactions in certain materials, such as UV resin. The blue light in the UV spectrum is particularly effective at curing UV resin.

UV lamps and professional UV curing machines commonly cure UV resin. These devices emit UV radiation at a specific wavelength range, typically around 365 nm. The UV photons' energy causes the resin's chemical bonds to cross-link and harden.

While UV lamps and professional machines are effective, they can be expensive and bulky. An alternative option is to use a UV LED flashlight. These flashlights emit UV radiation in a narrow wavelength range, typically around 395 nm, which is still effective at curing UV resin.

Alternatives to UV Light for Curing

If you don't have access to a UV light source, you can still use a few alternatives to cure UV resin. Here are some of the most effective options:


There are few things as free and liberal as sunlight. The sun emits UV radiation, so you can cure your UV resin by simply placing it in direct sunlight for a few hours. Remember that the curing time will depend on the sunlight's strength and the resin layer's thickness.

Curing times are relatively short when applying a thin layer of resin, typically1/8 inch (3mm) or less. Thin layers allow for faster curing due to the limited depth the sunlight needs to penetrate.

Resin layers ranging from 1/8 inch (3mm) to 1/4 inch (6mm) are common in many applications, including epoxy countertops and small art projects. These layers strike a balance between curing time and thickness. Cure times are typically moderate.

Resin layers exceeding1/4 inch (6mm) are considered thick. Thick layers take longer to cure as UV light or heat must penetrate deeper into the resin. 


Applying heat can also cure UV resin. You can employ a hairdryer or a heat gun to warm up the resin and speed up the curing process. However, take extra care not to overexpose the resin to heat, which can cause it to crack or bubble.


UV resin cures faster at higher temperatures. If you have a curing chamber, you can set the temperature to 60-70°C to speed up the curing process. However, remember that higher temperatures can also cause the resin to shrink or warp.

Dry Environment

UV resin cures faster in a dry environment. You can work with a dehumidifier to extract excess moisture content from the air and create a dry environment for your resin to cure in. This will help prevent the resin from becoming tacky or sticky.

Flashlights and LED Lights

While flashlights and LED lights don't emit UV radiation, they can still help cure your UV resin. Simply place the resin under the light source for a few hours to speed up the curing process. The curing time will depend on the light's strength and the resin layer's thickness.

Overall, while UV light is the most effective way to cure UV resin, you can still use several alternatives if you don't have access to a UV light source. Just be sure to obey the user directives thoroughly and avoid making exaggerated or false claims about the effectiveness of these alternatives.

Factors Influencing Curing Without UV Light

Several factors can influence the curing process when curing UV resin without UV light. These factors include patience, watts, thickness, layer thickness, speed, ventilation, quality, stickiness after curing, transparency, support, hardening solvents, fast curing, longer curing times, and cool place.

Patience is of the essence when it comes to curing UV resin without UV light. If you are working with an alternative to UV light that’s maybe not as intense, you need to accept that it will take you a bit longer. Be patient and give it enough time to cure properly.

Watts is another important factor to consider when curing UV resin without UV light. The higher the wattage of the light source you use, the faster the resin will cure.

Thickness and layer thickness are also important factors to consider. Thicker resin layers will take longer to cure, so it's best to apply thin layers and gradually build up the thickness.

Speed is another factor that can tilt the curing process one way or another. If you move too quickly, you may have uneven or incomplete curing.

Ventilation is important when curing UV resin without UV light. Proper ventilation will ensure that the resin cures properly and doesn't become sticky or tacky after curing.

Quality is also an important factor to consider. High-quality resin will ensure that it cures properly and doesn't become sticky or tacky.

Transparency is another factor to consider when curing UV resin without UV light. Some resins may cure with a cloudy or hazy appearance, so it's important to choose a resin that cures clearly if transparency is important to you.

Support is important when curing UV resin without UV light. If the resin isn't supported properly during the curing process, it may warp or deform as it cures.

Hardening solvents can also be used to speed up the curing process, but they can also affect the quality and transparency of the cured resin.

Fast curing and longer curing times are also factors to consider. Some resins may cure faster than others, while others may require longer curing times to cure fully.

Finally, curing in a cool place can help slow down the curing process and prevent the resin from becoming sticky or tacky.

Safety Measures During the Curing Process

Taking certain safety measures to protect yourself from budding harm is paramount when working with UV resin. Here are some things to keep in mind during the curing process:

Eye Protection

UV light can hurt your eyes, so wearing protective eyewear when working with UV resin is important. Make sure the eyewear you choose is rated for UV protection and fits securely over your eyes. Avoid looking directly at the curing light; if you need to inspect your work, turn off the light first.


UV resin emits fumes during curing, so working in a well-ventilated area is important. If possible, use a fume hood or work outside. If you work indoors, open windows and doors and use a fan to radiate the air. Avoid breathing in the fumes directly, and take breaks if you start to feel lightheaded.


Some UV resins can be toxic if ingested or absorbed through the skin, so avoiding contact with the resin as much as possible is imperative. Wear gloves when handling the resin, and avoid touching your face or mouth while working. If you do come into contact with the resin, rinse the affected area promptly with soap and water.

By taking these safety measures, you can protect yourself from potential harm while working with UV resin. Always read the manufacturer's instructions and follow them carefully.

Applications of Cured UV Resin

Cured UV resin has many applications, making it a popular choice for many DIY projects, small-scale manufacturing, and jewelry making. Here are some of the most common applications of cured UV resin:

Resin 3D Printers

UV resin is commonly used in resin 3D printers to create high-quality, detailed prints. Once the resin is cured, it creates a durable and enduring product that can retain its quality over time.

Small Projects

Cured UV resin is perfect for small projects such as creating custom keychains, coasters, and other small decorative items. It can also be used to create molds for casting other materials, such as metal or plastic.


Cured UV resin is an excellent medium for unleashing your creativity. It can be used to create unique and eye-catching jewelry, home decor, and other decorative items that are sure to impress.

Jewelry Making

UV resin is a popular choice for jewelry making due to its ability to create intricate and detailed designs. It is also easy to work with and can be used to curate diverse jewelry pieces, such as rings, bracelets, and necklaces.

DIY Projects

If you like the allure of creating designs on your own, cured UV resin gives you the perfect platform to do so. Projects like creating custom phone cases, coasters, and other decorative items are all made possible with resins. It is also an excellent medium for creating custom molds for casting other materials.

Cured UV resin is a versatile and long-lasting material that is perfect for a wide range of applications. Whether you are a DIY enthusiast, a jewelry maker, or a small-scale manufacturer, cured UV resin is an excellent choice for creating high-quality, detailed, and long-lasting products.

Selecting the Right Resin for Your Project

When it comes to selecting the right resin for your project, there are a few things to consider. First, decide whether you need a 1-part or 2-part resin. 1-part resins are easier to use and require no mixing, but they are less durable than 2-part resins. 2-part resins are more durable but require careful mixing.

Next, consider the curing time. Some resins cure quickly, while others take longer. If you need a quick cure time, look for a resin that cures in 24 hours or less. If you have more time, you can opt for a resin that takes longer to cure but offers better results.

Another important factor is the resin's viscosity. Thin resins are ideal for filling small gaps and cracks, while thicker resins are better for larger gaps and surface coatings.

It's also important to consider the resin's ability to resist yellowing over time. Some resins have a tendency to yellow over time, while others resist yellowing and remain clear for longer periods.

Finally, consider the price and shelf life of the resin. Some resins are more expensive than others, but they may offer better results. Additionally, some resins have a shorter shelf life than others, so be sure to check the expiration date before purchasing.

Overall, selecting the right resin for your project requires meticulous examination of multiple factors. By choosing the right resin, you can ensure that your project turns out beautifully and keeps its beauty for years to come.

Drawing The Curtain

The quest to cure UV resin without the aid of UV light has unveiled a world of creativity and innovation in the realm of crafting and DIY projects. Whether you find yourself without a UV light source or simply seek alternative methods, this article has explored a range of easy and effective techniques that open up new possibilities for resin enthusiasts.

From natural sunlight to LED lights, the options are diverse and adaptable to various situations. The choice of method ultimately depends on your project's specific needs and your available resources. While curing UV resin without UV light may require a bit more patience or experimentation, the results are worth the effort.

Remember that practice makes perfect as you embark on your resin crafting journey. Experiment with different curing methods, and don't hesitate to mix and match techniques to achieve the desired results. With these versatile curing options at your disposal, the possibilities are endless, and your resin creations are bound to shine brilliantly, even without UV light. So, embrace your creativity, explore the world of UV resin curing alternatives, and let your imagination flow freely.

Frequently Asked Questions

How to cure UV resin without a UV light?

You can use natural sunlight or an LED lamp to cure UV resin without UV light. Place your project in direct sunlight or under the LED lamp for several minutes until the resin is cured. 

Remember that curing times may vary depending on the strength of the sunlight or LED lamp being used.

How long does it take for UV resin to cure without a UV light?

The curing time for UV resin without UV light will depend on the light source's strength. Natural sunlight can take anywhere from30 minutes to several hours, while an LED lamp can take just a few minutes. Be sure to check the manufacturer's instructions for recommended curing times.

What can be used to cure UV resin without UV light?

In addition to natural sunlight and LED lamps, other light sources can be used to cure UV resin. These include fluorescent light bulbs and black lights. However, be reminded that curing times may alternate based on the light source's strength.

Can UV resin be cured with an LED lamp?

Yes, UV resin can be cured with an LED lamp. LED lamps emit a specific wavelength of light that is capable of curing UV resin. Be sure to use an LED lamp that is specifically designed for curing UV resin, as not all LED lamps are created equal.

Is a UV curing station necessary for curing UV resin?

No, a UV curing station is not necessary for curing UV resin. While a curing station can provide a controlled environment for curing, it is not required. You can cure UV resin without a curing station if you have a suitable light source, such as natural sunlight or an LED lamp.

Can heat be used to cure UV resin?

While heat can be used to cure some types of resin, it is not recommended for curing UV resin. UV resin requires a specific wavelength of light to cure properly, and heat may cause the resin to cure unevenly or not at all. Stick to using a suitable light source for curing UV resin.