How To Embed Leds In Resin - Detailed Guide For Beginners

  • Resin Art 101
  • Posted by: carson-rutz
  • Oct 13, 2023

Do you want to add an intriguing and elegant touch to your art by embedding LEDs in resin but don't know where to begin? The following steps will guide you in turning your creative aspirations into reality, and crafting unique and impressive pieces. Let's explore how to embed LEDs in epoxy resin to create illuminating highlights for your artwork.

Step-by-step Guide to Putting LEDs in Epoxy Resin

Put lights in resin is quite simple. Let your creativity shine with these easy-to-follow steps. 

Leds in resin
leds in resin

Step 1: Prepare Materials Needed

Prepare materials needed
prepare materials needed (source: youtube ben’s worx)

When you put lights in resin, using the right materials and preparing them properly is important. This will help you create a high-quality LED project that will look great and perform well for many years to come. Here is a list of all the materials you will need to embed LED strip light in resin:

  • Epoxy resin: When choosing an epoxy resin, be sure to select one that is specifically formulated for casting. Some epoxy resin brands that you can use to embed led strip lights in epoxy resin such as VARATHANE, Pro Marine, Promise Epoxy,...
  • LED lights: There are many different types of LED lights available, so you can choose the perfect ones for your project. Power up your project with LED lights that are compatible with your power source. For example, if you are using batteries, you will need to choose LEDs that are designed to operate on low voltage.
  • Wiring: Connect your LEDs to the power source with a wire. Use thin, flexible wires that are easy to solder.
  • Small soldering iron and solder: A small soldering iron and solder are necessary for connecting the wires to the LED terminals. Use a fine-tip soldering iron to solder your LEDs with precision and care.
  • Batteries or a power source: A power source, such as batteries or a power supply, is essential for the LEDs' operation. Make sure the chosen batteries can provide adequate power for all the LEDs being used.
  • Mixing cups, stir sticks, and disposable gloves: You will need mixing cups, stir sticks, and disposable gloves to mix the resin safely. Note that art resin is non-stick to plastic, so use hard plastic mixing containers and tools for easy cleanup.
  • Silicone mold or container for casting the resin: When choosing a mold, it is important to make sure that it is the right size for your LED. The mold should also be deep and thick enough to support the LED and the resin.
  • Others: You can add color, glitter, and lights to your resin project to achieve the desired look. To keep the resin translucent so that the lights shine through, use less color. This may require some experimentation to get the perfect color and light combination, but that's part of the fun!

Step 2: Prepare Your Resin Mixture

Before mixing the epoxy resin, be sure to read and follow the manufacturer's instructions carefully. Different brands of epoxy resin have different mixing ratios and curing times. The most usual ratio is 1:1, but it also can be 2:1, 3;1, or 5:1. Always follow the instructions as different products may have different requirements.

Mixing the epoxy resin
mixing the epoxy resin (source: youtube ben’s worx)

In case of adding color to the resin, don't add more than 6% of the total volume of the mixed resin and hardener. Stir well to ensure that the colorant is evenly distributed. Adding colorant to the resin or hardener alone can disrupt the 1:1 mixing ratio, which is necessary for proper curing.

Adding color to the resin
adding color to the resin (source: youtube ben’s worx)

To mix the epoxy resin, you will need two mixing cups, one for the resin and one for the hardener. Pour the resin and hardener into the respective mixing cups in the correct ratio. For a perfect resin project, measure the resin and hardener accurately. Too much or too little of either component can cause your project to fail.

Once the resin and hardener have been measured, stir each component thoroughly for 3-5 minutes until it is well mixed. Then, pour the resin and hardener into a third mixing cup and stir them together until they are completely combined. Always wear disposable gloves when handling epoxy resin to protect your skin.

Stir each component thoroughly for 3-5 minutes
Stir each component thoroughly for 3-5 minutes

Step 3: Set Up the LED Wiring

Set up the led wiring
set up the led wiring (source: youtube ben’s worx)

Setting up the LED wiring is a crucial step before embedding them in resin to ensure the performance of the LED. Here’s how you can do it:

  • Determine the number of LEDs: To begin the third step, you must first determine how many LEDs you want to embed in the resin and where you want to position them. Adjust the number of LEDs based on your project size and desired effect.. 
  • Cut the wires: Using a wire cutter, cut thin, flexible wires to the appropriate length for each LED. Ensure enough wire to connect each LED to your power source.
  • Solder the wires to the LEDs: After you have cut all the wires, you can use a small soldering iron and solder. And then attach the wires to the positive (anode) and negative (cathode) terminals of each LED. LEDs are sensitive to heat, so it is important to be careful not to overheat them during this process.

Step 4: Position LEDs in the Mold

To position the LEDs in the mold, start by arranging them evenly and securely in the silicone mold or container. Keep the positive and negative ends of the mold in plain sight! They should be easily accessible at the edges. Making the wiring accessible now will make it easier to connect later on, which can save time and frustration.

Position leds in the mold
position leds in the mold (source: youtube ben’s worx)

If you're creating a more intricate LED design, consider placing them in layers. This ensures they don't touch each other or the mold's sides. This will prevent any unwanted interactions and ensure a clean, crisp LED display in the finished product.

Remember to take your time and plan your LED layout carefully before moving on to pouring the resin. A well-placed LED design can take your resin project from ordinary to extraordinary.

Step 5: Pour the Resin

If you are pouring the resin over tubing or an LED strip, it is important to pour it in layers. This prevents resin from flowing under tubing or LED strips and creating bubbles.

Don't just pour the resin all at once! Start with a thin layer to create a layered resin masterpiece. Cure the first layer before adding the next. Continue adding layers of resin until the mold is full.

Pour the resin into the mold
pour the resin into the mold (source: youtube ben’s worx)

Bubbles, dust, and other imperfections can sometimes form on the surface of the resin. To avoid this, clean the work area before starting. You can also remove bubbles or imperfections with a heat gun or torch.

To remove bubbles from resin with a heat gun or torch, keep the heat gun or torch moving constantly to avoid overheating any one area of the resin. The best distance from the gun to the resin surface is six inches. Be careful not to hold the heat gun or torch too close to the resin, as this can overheat the resin and damage it. 

Remove bubbles with a heat gun or torch
remove bubbles with a heat gun or torch (source: youtube ben’s worx)

Tips for pouring the resin:

  • Pour the resin slowly and carefully to avoid displacing the LEDs.
  • If you are pouring the resin in layers, be sure that each layer cures completely before adding the next layer.
  • Use a heat gun or torch to remove them by holding it six inches away from the resin surface and sweeping back and forth.
  • Be careful not to overfill the mold with resin, as this can put pressure on the LEDs and damage them.

Step 6: Cure the Resin

Once you have poured the resin into the mold, you need to cure it completely before demolding your project. Curing times vary depending on the type of epoxy resin you use, so be sure to consult the manufacturer's instructions.

Most epoxy resins will cure completely within 24 hours at room temperature. However, some resins may require a longer curing time, especially if the project is thick or complex. 

For a quick and easy resin cure, use a heat gun. Remember, Don't let your resin get too hot! Overheating can cause it to discolor.

Cure the resin within 24 hours
cure the resin within 24 hours (source: youtube ben’s worx)

To cure the resin, simply place the mold in a well-ventilated area and allow it to sit undisturbed. 

Step 7: Demold and Test the LEDs

Once your projects have cured, you can de-mold them by carefully removing them from the silicone mold. LEDs and resin are delicate creatures. Handle them with care to avoid damage.

Removing from the silicone mold
removing from the silicone mold (source: youtube ben’s worx)

If there are any drips or imperfections on the edges of the projects, use a sharp craft knife or sandpaper to trim them away. Avoid cutting yourself or damaging the LEDs during this process.

Once the projects have been de-molded, you can test the lights by connecting them to a power source. Start by checking the connections. Are all the wires properly soldered or securely connected? A loose wire could be the culprit behind a non-functional LED. 

Test the leds and enjoy
test the leds and enjoy (source: youtube ben’s worx)

Double-check your work and make sure everything is snugly in place. To see the full effect of the lights, dim the lights in the room. Now you can enjoy your beautiful and unique LED-embedded creations!

Best LED Lights For Epoxy Resin

The best LED lights for resin are heat resistant, waterproof, and have a long lifespan. Here are a few of the best LED lights for epoxy resin:

Name Main Features Rating Price
Ribbon Star, RGB 180 LED Strip Light - UL 12VDC

Ribbon star, rgb 180 led strip light - ul 12vdc

  • Dimensions: 118"L x 0.40"W x 0.07"H
  • Connection Type: 4 Wire RGB(+)
  • Watts: 4.30W per foot
  • Operating Temp: -4°~113°F
  • Lifetime: 50,000 Hours
IP20 Indoor
  • $32.99/3.28ft (1m) Custom Length
  • $89.99/9.84ft (3m) Full Reel
Ribbon Star, Waterproof RGB 180 LED Strip Light - UL 12VDC - 118"

Ribbon star, waterproof rgb 180 led strip light - ul 12vdc - 118"

  • Dimensions: 118" x 0.52" x 0.28"H
  • Connection Type: 4 Wire RGB(+)
  • Watts: 4.3W per foot
  • Operating Temp: -4°~104°F
IP67 Waterproof
  • $55.99/4.92ft (1.5m) Half Reel
  • $111.99/ 9.84ft (3m) Full Reel
Ribbon Star, RGB 180 Black PCB LED Strip Light - UL 12VDC

Ribbon star, rgb 180 black pcb led strip light - ul 12vdc

  • Dimensions: 118"L x 0.40"W x 0.07"H
  • Connection Type: 4 Wire RGB(+)
  • Watts: 4.30W per foot
  • Operating Temp: -4°~113°F
  • Lifetime: 50,000 Hours
IP20 Indoor
  • $32.99/3.28ft (1m) Custom Length
  • $89.99/9.84ft (3m) Full Reel
Ribbon Star, RGB 180 LED Strip Light - UL 24VDC

Ribbon star, rgb 180 led strip light - ul 24vdc

  • Dimensions: 118"L x 0.40"W x 0.07"H
  • Connection Type: 4 Wire RGB(+)
  • Watts: 4.30W per foot
  • Operating Temp: -4°~113°F
  • Lifetime: 50,000 Hours
IP20 Indoor
  • $32.99/3.28ft (1m) Custom Length
  • $89.99/9.84ft (3m) Full Reel
Ribbon Star, Waterproof RGB 180 LED Strip Light - UL 24VDC - 118"

Ribbon star, waterproof rgb 180 led strip light - ul 24vdc - 118"

  • Dimensions: 118" x 0.52" x 0.28"H
  • Connection Type: 4 Wire RGB(+)
  • Watts: 4.30W per foot
  • Operating Temp: -4°~113°F
  • Lifetime: 50,000 Hours
IP67 Waterproof
  • $55.99/4.92ft (1.5m) Half Reel
  • $111.99/9.84ft (3m) Full Reel

Note: Selling price may change over time

How to Choose LEDs in Resin

Choosing the right LEDs for your resin project can greatly affect the final result. Here are some factors to consider:

Choose leds in resin
choose leds in resin

LED Type

Heat-resistant LED light strips: Epoxy resin can generate heat when it is curing, so it is important to use LED light strips that are heat-resistant. This will prevent the lights from melting or being damaged by the heat.

Waterproof LED light strips: It is also important to use LED light strips that are waterproof. This will prevent the lights from being damaged by the resin or water. Look for LED light strips that have waterproof rating at IP65 or IP67.

Choose leds types that are heat-resistant and waterproof
choose leds types that are heat-resistant and waterproof

Size and Shape

Consider the size and shape of the LEDs to fit your specific project needs. 

Length: LED light strips are available in a variety of lengths. Select a length that meets your project's needs.

Shape: Smaller LEDs are ideal for intricate or delicate designs, as they can be precisely placed within the resin. Conversely, larger LEDs can produce more significant lighting effects and are excellent for creating eye-catching focal points in your resin creations.

If the LED light is too big, it may not fit in your mold. The weight may be too much for the resin to support. If the LED light is too small, it may not be visible or it may not provide enough light.

Choose the size and shape of the leds
choose the size and shape of the leds

Color and Intensity

LED light strips come in a variety of colors, including single-color, RGB (red, green, and blue), and RGBW (RGB with white). Single-color light strips are the simplest and most affordable option. RGB light strips allow you to mix and match colors to create a wide range of effects.

Additionally, LED light strips have different brightness levels, measured in lumens. Brighter light strips have higher lumen ratings. Consider the brightness level for your project.

The color and intensity of the leds
the color and intensity of the leds

Power Source

Power your LEDs with a suitable power source. Battery-powered LEDs are portable and easy to use but may require regular replacement. On the other hand, wired LEDs need a power supply but provide a continuous power source.

Choose the power source of the leds
choose the power source of the leds

Wiring Type

When selecting wires for your LEDs, choose thin, flexible wires that are suitable for electronics. These wires should be easy to embed in the resin without creating noticeable bumps, ensuring a smoother finish for your project. Some common types of wire that are used in LED resin projects include

  • Copper wire: Stranded copper wire is a good all-purpose wire for LEDs. Stranded copper wire is a good choice because it is both flexible and durable.
  • Silicone wire: Silicone wire is a good choice for LEDs that will be exposed to moisture or heat. It is also very flexible and easy to work with.
  • LED wire: LED wire is a type of wire that is specifically designed for LEDs. It is easy to install and flexible in colors and lengths.

In which, copper wire is often recommended for use with LEDs in resin for conductivity, durability, and flexibility.

Wiring type of the leds
wiring type of the leds

Tips for Proper Wiring and Safety

During the process, there will still be potential risks that can be harmful to you and the final result. Below are some tips to prevent them:

Proper wiring and safety
Proper wiring and safety

Insulate Wires Properly

Use thin, flexible wires suitable for electronics and easy to embed in the resin without creating noticeable bulges or bumps. Avoid using types of wire that can melt and potentially damage the LEDs.

Insulate wires properly
Insulate wires properly

Besides, you need to use heat shrink tubing or electrical tape to insulate all exposed wires, including the positive and negative terminals of the LEDs. This will help to prevent short circuits and electrical shocks. 

Avoid Overheating LEDs

Avoid overheating leds
Avoid overheating leds

When soldering the wires to the LED terminals, it’s crucial to avoid overheating the LEDs. High temperatures reduce LED performance and lifespan. A fine tip soldering iron will allow you to apply the solder more precisely. And a low heat setting will help to prevent the LED from overheating.

Plan LED Placement Carefully

Before casting the resin, plan the placement of the LEDs carefully. The wires are positioned in a way that they will be easily accessible for connecting to the power source. Avoid placing the LEDs too close to the edges of the mold, as this can damage the wires.

Moreover, you should think about the overall design and arrangement of the LEDs within the resin. Plan their placement to create the desired visual effects, whether it's a uniform distribution of light or a specific pattern.

Plan led placement before casting
Plan led placement before casting

Test the LEDs Before Casting

Before casting the resin, test the LEDs with the power source to ensure they function correctly. This will be able to identify any faulty LEDs early. Besides, this avoids wasting time and resources on a project that will not work.

To test an LED, connect it to a power source, such as a battery or power supply. If the LED lights up, then it is working properly. If the LED does not light up, then it is faulty and should be replaced. It's important to check for consistent brightness and color among all LEDs to achieve uniform lighting effects in your project.

Test the leds before casting
Test the leds before casting

Closing Thought

Now you know how to embed LEDs in resin. You're on your way to becoming a master of embedding LED strip lights in epoxy resin! Let's take a quick trip down memory lane and recap the key points of this guide. With this newfound knowledge, you can bring your creative projects to life.

FAQs

Should You Put LEDs in Resin?

LEDs in resin can create captivating visual effects, such as glowing, twinkling, or illuminated patterns. If you are looking to add a unique and eye-catching element to your artwork or DIY creations, embedding LEDs in resin can be a great choice.

Is it safe to put LED lights in resin?

Yes. LED lights are the perfect partner for resin. They're cool, energy-efficient, and won't mess up your project. However, it’s important to use LEDs that are waterproof or coated with a material that is safe for resin. Also, always remember to follow safety guidelines when working with these materials.

Can you put fairy lights in resin?

Yes, fairy lights are typically made with LED lights, which are safe to embed in resin. However, it is important to choose fairy lights specifically designed for outdoor use. These lights will be more water-resistant and durable.

Can light pass through resin?

Epoxy resin is a transparent material that allows light to pass through. Epoxy resin is ideal for applications where you want to see what's beneath it, like optical displays. However, the ability of light to penetrate materials can depend on the type of light and the chemical composition of the materials.

Are LEDs in resin projects safe?

LED lights are a great choice because they don’t generate heat, which could affect the resin. LEDs in resin projects are safe if you use the right type of resin and follow the proper safety precautions.

Can I use colored resin with LEDs?

You can add colors and glitter along with the lights to achieve the look you’d like for your project. However, to achieve a translucent resin finish, it is important to use less color. The more color you add, the more opaque the resin will become. So, LED lights under epoxy can shine brightly.

 

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