What is UV resin?

UV resin or Ultraviolet resin is a type of one-component synthetic photopolymer resin known for its ability to cure rapidly when exposed to ultraviolet light or direct sunlight. Presented in transparent liquid form, it is characterized by its direct application from the container, without mixing components, and its ability to mimic the appearance of glass upon curing. Because of its ability to cure in minutes under the UV lamp, it has become a popular product in arts and crafts. In addition, it allows encapsulation of objects and working in layers.

It is a must for our wargames and miniatures. It is perfect for artists and modelers who want to look for realistic ways to create water effects or toxic effects in their dioramas. They usually create a water effect of pure transparency, but there is also a fluor version that creates a fluorescent effect with a unique glow-in-the-dark result when approached with a ultraviolet flashlight. 

It has a gel-like viscosity and is applied directly to the base of the miniature. It has an ultra-fast drying time when combined with an ultraviolet flashlight, taking between two and four minutes. 

It should be noted that it will remain in a liquid state permanently until ultraviolet light or daylight hits it. While that happens, you can spread and rectify its application as needed. Once the desired shape is achieved, apply light on it to dry it completely and harden it. If after doing this you notice that it remains sticky to the touch, it is because there has been a problem with the ultraviolet light, either because of the amount or the intensity of the light. If the flashlight has very low batteries or if the flashlight is very dirty it could directly affect the curing.

It is advisable to apply a gloss varnish once it has dried as it gives a more striking effect to the original color generating more visual transparency as well as eliminating the sticky effect when it is not completely cured.

This product does not have to be mixed with any other component to harden, only ultraviolet light should be used. Sun curing is also possible and will take 5 to 10 minutes on a sunny day. This time is reduced to between 90 and 240 seconds by applying curing light. It can be tinted with different dyes available on the Green Stuff World website.

How to use UV resin?

Using UV resin is straightforward and suitable for a variety of creative projects, including jewelry making, encapsulating objects, and crafting detailed decorations. Here’s a simple guide on how to use it effectively:

1. Preparation: Begin by protecting your workspace with a disposable cover, such as wax paper or plastic sheeting. Gather all necessary materials, including the molds (if using), any inclusions like glitter or colorants, and a lamp or access to direct sunlight.
2. Application: Dispense it directly from its container onto your project or into a mold. If adding inclusions like colorants or objects, mix them with the product or layer them as needed.
3. Curing: Expose it to a ultraviolet light to cure it or by placing the item in direct sunlight. Curing takes between 2 to 5 minutes, depending on the depth and the light intensity.
4. Layering: If your project requires multiple layers, wait until the initial layer is completely cured before applying the next. This prevents the layers from mixing and helps maintain clear boundaries and effects.
5. Finishing Touches: Once fully cured, you can further refine the project by sanding rough edges or applying a polish or glaze to enhance its natural gloss.

This process allows for rapid project completion and offers significant creative flexibility due to the quick curing time.

Is uv resin toxic?

UV resin, like many synthetic chemicals, contains chemicals that can be hazardous before they are cured. Its toxicity primarily concerns its uncured state, when it can release fumes that might be irritating to the skin, eyes, and respiratory system. These fumes are due to the presence of volatile organic compounds (VOCs).

Both the odor and toxicity levels are lower than traditional methods, making it more comfortable and pleasant to use. Although its use indoors is not potentially dangerous, it is necessary to maintain some precautionary measures during the process.

Before starting to work with this product, be sure to be in a ventilated area, as it can give off vapors during the curing process. In addition, to avoid direct contact, it is necessary to wear nitrile gloves and, if the context requires it, even protective goggles and a painting mask.

Once fully cured, It is generally considered safe and non-toxic, as the chemical compounds have reacted to form a stable, inert polymer. However, it's essential to handle and use this product in a well-ventilated area to minimize exposure to any harmful fumes. Additionally, wearing protective gloves and, in some cases, a mask or respirator is recommended, especially when working with large quantities or in less ventilated spaces.

Finally, the handling of this type of material should be done away from children or pets to protect them from possible splashes of the product, and it should be stored in a place that is difficult for them to access.

How long does UV resin take to cure?

Its curing time can vary depending on several factors, but generally, it cures very quickly when exposed to ultraviolet light. Under a UV lamp, It takes about 2 to 5 minutes to cure completely. This time can be slightly longer or shorter based on the intensity and wavelength of the light source, as well as the thickness of the application.

When using sunlight the time required can also vary. On a sunny day, it might take approximately 5 to 10 minutes to fully cure. However, on cloudy days or in less direct sunlight, the curing process can take significantly longer.

It’s essential to ensure that it is exposed evenly to the light to achieve a consistent and thorough cure. Incomplete curing might leave the surface tacky or soft, which is a common issue if the exposure is insufficient. For optimal results, always follow the manufacturer’s guidelines regarding the recommended curing times and conditions.

How to color transparent ultraviolet resin?

Coloring UV resin is a fairly simple process as it is thermosetting and does not need to be mixed to cure, unlike epoxy resin. To do it, it is only necessary to have a specific dye for this material of the desired color, available on the Green Stuff World website. The steps to color it are as follows:

1. Place in a plastic cup the amount of product you need.
2. Add the dye for resins. We recommend not to apply more than 5% of dye to the mixture, which is equivalent to one or two drops of the liquid.
3. With a suitable spatula, mix until it is evenly tinted.
4. Place the result on the mold, base, or diorama of your choice and dry.

The process of choosing the dye is vital for an optimal finish. It mustn't contain alcohol, because alcohol produces a chemical reaction with which it will lose several of its properties. Therefore, the best option is always to use the dyes offered by the same brand.

Is UV resin food safe?

UV resin, once cured, is typically considered non-toxic, meaning it doesn't release harmful chemicals. However, being non-toxic does not automatically qualify it as food-safe. The term "food-safe" refers to materials that are safe to come into direct contact with food without the risk of leaching chemicals into the food or otherwise contaminating it.

They are not normally certified as food-safe because they can potentially release substances into food or beverages, especially when subjected to certain conditions like heat or acidity. For projects that involve direct contact with food, such as making coasters, trays, or other items that might come into contact with food or drink, it is crucial to use a product that is specifically labeled as food-safe.

If you are working on a project that requires food safety, look for something that have been tested and approved according to food safety regulations, often indicated by FDA approval for direct food contact. These products undergo rigorous testing to ensure they do not contain harmful substances that could migrate into food.

Why is my UV resin sticky after drying?

If your ultraviolet resin is sticky after curing, it indicates that it has not been fully cured. This issue can arise from a few different factors:

1. Insufficient Exposure: The most common reason for tackiness is inadequate exposure to ultraviolet light. If it doesn't receive enough UV light, it won't cure completely. This can be due to using a light source that isn't strong enough, not exposing it to the light for long enough, or the light not reaching all parts evenly, especially in deeper or more opaque pours.
2. Thickness: If the application of the product is too thick, the light may not penetrate through to the bottom layers, resulting in incomplete curing. This product is best used in thin layers. If a thicker layer is necessary, it should be built up by adding multiple thin layers and curing each thoroughly before applying the next.
3. Type of Pigment or Additive: Sometimes, the addition of certain pigments, colorants, or other additives can interfere with the curing process. Some pigments might block light, while others could react chemically.

To remedy sticky resin, try exposing it to ultraviolet light for a longer period, or consider using a stronger light source. If certain areas are under-cured, additional focused exposure might be needed. For future projects, ensure even light coverage and appropriate curing times based on the application depth and the type of additives or pigment added.

A quick solution is to use an acrylic gloss varnish to cover these sticky areas that are not fully cured. The varnish will dry quickly creating a protective barrier on top of the sticky area, completely eliminating the problem.

Can you use UV resin in silicone molds?

UV resin works exceptionally well with silicone molds, making it a popular choice among crafters and hobbyists. Silicone molds are highly favored for their non-stick qualities, which significantly ease the demolding process. The flexibility of these molds allows for the gentle removal of fully cured pieces without damage to the delicate details or the mold itself. This feature is especially beneficial when creating intricate designs or thin, fragile pieces that might otherwise snap or break when extracted from more rigid materials.

Another advantage of using silicone molds is their durability. Silicone withstands its chemical components and the light exposure needed for curing without degrading. This resilience makes silicone molds a cost-effective option for repeated use in casting, ensuring that each project turns out as smooth and detailed as the last.

When casting using silicone molds, it’s crucial to ensure the mold is impeccably clean and free from any dust or particles. Even minor imperfections can be transferred from the mold to the finished product, so taking the time to properly prepare your mold before use will help achieve the best possible results in your crafting projects.

How to cure resin without UV light?

Curing UV resin without a UV light source is inherently challenging because this product is specifically designed to react and harden under ultraviolet light. However, if you find yourself without access to a ultraviolet lamp or direct sunlight, there are a few alternative approaches you might consider, though they come with limitations and are generally less effective.

One method to attempt curing it without ultraviolet light involves using strong ambient ultraviolet sources, such as bright, indirect sunlight. Placing it near a sunny window where it can be exposed to daylight over a prolonged period might eventually lead to some degree of curing. This method heavily depends on the intensity and duration of light exposure and may not consistently yield fully cured results.

Another approach is leveraging fluorescent lights, as some emit a small amount of light. Exposing the product to these lights for extended periods could induce slow curing. However, this method is less reliable since it may not cure evenly or to the full possible hardness.

It's important to acknowledge that these methods are makeshift solutions and often do not substitute adequately for the curing power of a dedicated light source. For best results, using an ultraviolet lamp or natural sunlight remains the most efficient and reliable way to cure it.

What is UV resin used for?

It is extensively used in various creative and industrial applications due to its rapid curing time and ease of use. It is particularly popular in jewelry making, where it is used to create pendants, bracelets, and earrings because it can quickly encapsulate small objects like flowers, glitter, and beads with a clear, glossy finish. 

Crafters also use it in making keychains, coasters, and other decorative items. In fine arts, it serves as a protective coating for paintings and photos, enhancing their colors and protecting them from moisture and wear. Additionally, It is utilized in DIY home decor projects, where it can be used to make custom table tops or to repair glass and plastic items. Its ability to cure quickly under UV light makes it ideal for projects that require a fast turnaround.

Can you over-cure UV resin?

Over-curing UV resin is possible and can affect the physical properties of the final product. While It normally cures within minutes, exposing it for an extended period can lead to yellowing and brittleness. 

This happens because the light continues to break down the chemical structure, which can degrade its quality and reduce its clarity and luster. Over-curing it can also make it to become less effective at protecting encapsulated objects.

Can you use alcohol ink in UV resin?

Yes, you can use alcohol ink in UV resin to add vibrant colors and create unique effects. Alcohol ink mixes well and can be used to achieve various artistic designs such as wispy, smoke-like effects and intense color saturation. 

When using alcohol ink, it's important to add it sparingly and gradually to control the intensity and distribution of color. Keep in mind that alcohol ink can affect the curing process, so it's advisable to experiment with small batches first to ensure it still cures properly and achieves the desired finish. Additionally, the inks may react differently with different brands, so testing is crucial.

How to polish UV resin?

Polishing UV resin is a great way to enhance its clarity and shine after it has cured. Start by sanding its surface with progressively finer grits of wet sandpaper, beginning with a coarse grit (like 400) to remove any major imperfections or uneven surfaces, and gradually moving to finer grits (up to 2000) for a smooth finish. 

After sanding, use a polishing compound and a soft cloth or a buffing wheel to polish the surface to a high shine. For the best results, apply a plastic polish to the surface and buff it until it reaches the desired level of gloss. This process not only improves its aesthetic but also helps to protect its surface from minor scratches and abrasions.

Does UV resin expire?

It does have a shelf life and can expire. It can last for about six months to one year when stored properly. The shelf life can be affected by factors such as exposure to air, heat, and of course, direct sunlight. 

Once expired, It may become difficult to cure properly and can develop a yellow tint. To maximize the lifespan, store it in a cool, dark place and ensure the container is tightly sealed to prevent exposure to air and moisture. Always check the expiration date provided by the manufacturer before use to ensure optimal performance.

How to clean UV resin?

Cleaning UV resin from tools and work surfaces involves a few steps, especially when the product is still uncured. Isopropyl alcohol is effective for cleaning uncured parts; simply apply it to a cloth or paper towel and wipe the surfaces clean. For tools like brushes or spatulas, soaking them in alcohol for a few minutes before wiping can help remove them more effectively. 

If it has been cured, mechanical removal might be necessary, as it is very hard and resistant to chemicals. Using a razor blade or a similar tool can help scrape off cured remains, but care must be taken to avoid damage to the underlying surfaces. Regular cleaning of tools and areas where it is used not only maintains a clean working environment but also extends the life of your tools.

What is the best UV resin?

When selecting this product for a project it is important to know that it has the necessary characteristics to obtain the desired results, since from one manufacturer to another there can be a big difference. To choose the best UV resin it is necessary to consider qualities such as:

• Transparency. Once cured, it must be crystal clear, without clouding or discoloration.
• Yellowing. Over time, low-quality products tend to be yellow, changing the appearance of the diorama or model.
• Curing time. The best UV resin cures quickly under an ultraviolet light, allowing the project to be completed in less time and reducing the wait to a few minutes. If it does not finish curing or the finish is not tacky or soft, it means it is damaged or of poor quality.
• Strength and durability. The finish should be hard and durable, resisting scratches and impact. It should also withstand moderate temperatures without warping or losing its clarity.
• Ease of use. For ease of use, the best UV resin should be ready to use, with no need to mix components, which simplifies the application process. In addition, its self-leveling capability results in a smooth, uniform finish without the need for extensive manual adjustments.
• Low viscosity. For a good finish, it should have a low viscosity. This prevents the formation of bubbles during application, which leads to an optimum finish. Thus, it can be used without problems in intricate and detailed projects as it will flow into the smallest spaces with ease.
• Safety. It is best to choose resins labeled as non-toxic, especially when they are to be used in enclosed spaces or projects involving children. Also, a low odor level in the best UV resin is best in these contexts, so that a much more pleasant and safer working environment can be created.
• Quality of the finish. Although the result is transparent, it should be borne in mind that the purpose of the product is to give the area where it is used a glossy finish that enhances its aesthetic appeal. However, there are also products for those seeking a matte or domed finish, if required by the project being worked on.
• Versatility. The best UV resin should be versatile and suitable for a wide range of applications. In addition to use in bases, figures, models, and the rest of the possibilities within modeling; it should be equally useful in other fields such as jewelry making, coating, inlaying objects, and other craft and decorative work.

If you are looking for the best UV resin on the market, that meets all the characteristics of a versatile and quality product, take a look at our catalog, where you can find one of the best UV resins in the industry, which leaves no one indifferent. In fact, in Green Stuff World we have a wide variety so you can find the one that best suits your project without having to worry about painting it or giving it the most suitable look for your miniature.

You can also check our dry paint brushes.