The Simple Steps To Casting Resin In Silicone Molds

Steps for resin casting in silicone moldsReady to try casting resin in silicone molds? Cool. It’s how you make beautiful resin art like a polaroid necklace or a bottle cap coaster. Here’s the easy guide to get you started and help you make something fantastic.

Step 1: Select your silicone mold

Silicone molds are great for casting epoxy resin. They’re flexible and come in a variety of shapes and sizes.

Here are our customer favorite resin molds:

Step 2: Apply mold release

Spray a light mist of resin mold release to the mold. Then, let dry for at least 30 minutes before pouring epoxy.

⭐️ BONUS: If you’re wondering why you should do this, here are some reasons why I use mold release.

mixing glitter with resin

Step 3: Mix and pour resin

Measure and mix your casting resin to pour into your mold. Casting resins are the best epoxy resin for silicone molds because they release bubbles. That means you’ll get crystal-clear resin projects.

⭐️ BONUS: If this sounds a little weird to you, it’s okay. Not too many companies talk about this. You can learn more about epoxy resin types and why it matters.

💡 Pro tip: Resins shrink a little bit as they cure. Overpour your mold a smidge.

Step 4: Remove bubbles

Go over the surface of the mold with a heat gun to remove bubbles.


Step 5: Let cure

Cover your mold with a box or plastic container to keep hair and dust from the resin while it dries.

demolding resin bracelet

Step 6: Demold the cured resin

Peel the mold away from the epoxy while grabbing a resin edge. Be careful if you use a soft silicone mold. It can tear if you are too rough.

⭐️ BONUS:  Reasons why resin sticks to your mold.

Step 7: Wash your mold

Wash your mold with soap and water. Shake out extra water, then set your mold aside to dry. Store it flat, away from direct heat and sunlight.

⭐️ BONUS: Get more mold care tips to keep them like new.

Here’s a video showing more about casting resin in silicone molds:

Want to create with epoxy resin but don’t feel ready?

I get it. You don’t want to waste your time and effort only to make a gooey mistake at the end. It’s why I wrote the ebook, Resin Fundamentals.  It shares the vital details artists, and crafters need to know to make something beautiful with resin from day one. Buy the PDF book now, and you can have it to read in minutes.


Unpublished Blog Posts of Resin Obsession, LLC © 2023 Resin Obsession, LLC

Like this post? You may be interested in  7 Silicone Mold Care Mistakes You Can Easily Avoid

21 thoughts on “The Simple Steps To Casting Resin In Silicone Molds

  1. Carolyn,

    I don’t know what tool you’re referring to. At what time (minute/second) in the video do you see this tool?

  2. I love your videos but some how mis it when you go live. But that is ok. You show a lot of things to try! I am always trying something new in my resin. Just to see if it works. It is fun! I too these little plastic mummys with a sticker on the back. It put in a dark blue glitter to see how it would look. It came out good except I forgot to push it down to make the bubbles would come out. So I ended with a big bubble between his eyes. Lol

  3. Hi Katherine! Thanks for making this site. The video doesn’t not appear for me. Have you taken it down? Is there another place i can access it? I’ve tried on a both a Chrome and Safari browser. Thanks!

    1. Thanks for bringing the technical issue to my attention. I have fixed the link. You should be able to see the video now.

  4. Hi
    I have just starting to do casting with epoxy resin 1:1 is it possible to use cake decorating moulds if they are silicone?
    Also how do I stop the colour from running and what do I use to paint details on my moulds before putting resin in?
    Sorry for so many questions but can’t find the answers anywhere. 🌈

  5. Hi Katherine,
    I am a beginner, my items are still sticky/soft on the tops, the resin in the moulds are set nicely, but the very top hasn’t i can put my nail in it, it smooths out, but that will be no good for boards, as i want to make bingo boards, so it can’t be soft, any ideas. Could you please e-mail me or i will loose it, i am an old lady and loose things easily, thank you x.

    1. Hi Don, you’ll need a two-part mold that casts with a hollow center. Unfortunately, I don’t know of a source.

  6. Hello, wondering how I use a mold that is 2 pieces and there is no hole anywhere to pour the resin into it. It’s a merkaba shape and I don’t understand how to get the resin inside without anywhere to pour it in. I appreciate help thank you.

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