Do I need a UV light for resin?

If you’re not familiar with resin, it’s a type of liquid plastic that cures under ultraviolet light. If you’ve ever used an epoxy putty (like Blu-Stuff or Sugru), then you have a basic understanding of how resin works.

Now, think about the items that are made from resin: casting molds for jewelry or other small knick-knacks, miniatures for tabletop gaming, objects d’art, and so on.

You probably wouldn’t be caught dead wearing something you made out of Blu-Stuff—it’s just too tacky—but most people can wrap their minds around wearing something cast in resin.

Resin is a platform. It allows us to express ourselves by taking our ideas and making them into physical objects that we can show off to our friends and loved ones. And this process is only possible with UV light.

Can I make resin without UV light?

You can make resin without a UV light, but it will take more than 24 hours to cure (set), and the results may be less than ideal.

For example, without a UV light, epoxy resin will not always cure completely clear, and there is always a chance that the curing process won’t be complete fully.

While resin brands vary in their instructions for curing time and conditions, below are some general guidelines for using natural sunlight:

  • If you’re using natural sunlight to cure resin, be sure to use it on a sunny day when ultraviolet rays are at their strongest.
  • If you’re working on an item that will require multiple layers of resin (for example if you want to cast multiple pieces into one layer of resin or if you’ll be making a thicker piece), you may want to go ahead with applying each layer as usual and then letting them all cure together in direct sunlight. This approach can help eliminate any inconsistencies between layers of cured and uncured resin once your piece is finished.

Is UV light important for resin?

Is UV light important for resin?

UV light is extremely important when it comes to curing your castings. Without UV light, you may have to wait several days for resin to cure. With UV light, this time can be significantly reduced.

UV light has a shorter wavelength than normal visible light and that is what allows it to penetrate the resin effectively and harden the liquid plastic into a solid object.

The energy from the UV radiation activates the atoms within the compound making them bond together more firmly and thus producing a completely cured casting much faster than without UV illumination.

Does all epoxy resin need UV light?

Not all epoxy resin requires UV light to cure. Some brands of epoxy resin require heat to cure, while some can be cured by UV light. Still, other brands of epoxy resin can be cured by UV light and heat.

Can you use a black light to cure resin?

Yes, you can use a black light to cure UV resin. It will take about six minutes for the resin to fully cure using this type of lamp. To give you an idea of how long it will take, I’ve included a table below which shows the nuances between the wattage of different types of black lights and their curing times for UV resin:

Can you cure resin with a nail lamp?

If you are wondering, “Can I cure resin with a nail lamp?” the answer is yes. A nail lamp is a UV light. It will cure resin, but there are some pros and cons to using one of these inexpensive lights. Let’s look at the benefits:

Can you dry resin with a hair dryer?

We were about to start work on our resin molds, and I was wondering whether or not this would be a good idea.

First, read through the instructions from the manufacturer of your resin. If you’re mixing it yourself, find out how long it needs to cure before use.

The curing period will vary from resin to resin, but most manufacturers recommend at least 24 hours before you can use your finished product.

So let’s say that for our example project we were working with a casting agent that still needs 48 hours of curing time.

Now that we have some information at our disposal, let’s talk about the hairdryer as a drying option…

On one hand, hair dryers do work pretty well as ovens: they heat things up very quickly and evenly. There are some advantages here—if you want something to be all dried out and hard while still being pliable (such as an acrylic block), a hair dryer could make the job much easier than using a conventional oven because it doesn’t take long for air currents or natural convection currents to cool down your stuff.

Just make sure that whatever you place in there is completely dry (not just lightly soapy-wet) and shouldn’t contain anything like rubber cement or epoxy (which will go from soft to brittle when dried).

But we shouldn’t rely on just hair dryers for this purpose—they don’t work quite as well for drying resin blocks because they don’t give off the same amount of hot air like an oven does (and when used with materials containing volatile elements such as peroxide, even blowing on them too hard can cause little explosions).

Can I use a UV light for epoxy resin?

A UV light is an essential piece of equipment for anyone who’s working with epoxy resin. If you’re using the stuff to make conventional furniture or decorations, you’re going to need it, as this type of resin will cure on its own after 24 hours, but not before that.

When working with clear epoxy resin, you’ll want to use a UV curing medium (often included in the kit), which is basically a special foam that contains a chemical reaction that allows your epoxy to harden more quickly and become more durable than normal.

This will speed up your project’s timeline considerably. You can also choose to use a low-intensity direct sunlight (LIDS) lamp for this task; you can find them on Amazon for about $20. The lamp gives off a wavelength similar to sunlight, so the epoxy takes longer to cure if it doesn’t get enough exposure in the first place.

Is there a difference between resin and epoxy resin?

Epoxy resin is a type of resin. All epoxies are resins, but not all resins are epoxies. Resin can refer to any polymer or liquid plastic.

Epoxy resin refers specifically to a thermosetting polymer often used in coatings, adhesives, electrical laminates, casting resins, and other applications.


Now that you have read this article, you should understand the importance of UV light in the curing process. You should also understand what type of UV light is needed and why.

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