How to cast resin into a silicone mold

How to cast resin into a silicone moldWondering how to cast resin into a silicone mold?  It isn’t difficult.  Here are the easy steps to follow to have you casting resin into silicone molds with awesome success!

Step 1: Select your silicone mold

Silicone molds are great for casting resin. They are very flexible and come in all shapes and sizes. We have a large selection of silicone molds for resin in our store.

Step 2: Apply mold release

Spray a light mist of resin mold release to the mold. Then, let dry for 30 minutes before pouring resin. If you are wondering why you should do this, here are some reasons why I use mold release.

Step 3: Mix and pour resin

Measure and mix your casting resin to pour into your mold. Casting resins are best for these situations because they will release bubbles easier so you can get a crystal-clear resin casting. If you want to learn more, this article explains the differences between doming resins and casting resins.

Pro tip: Resins will shrink a little bit as they cure. Overpour your mold just a bit as that resin will shrink and get closer to level as it cures.

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 out of the resin while it cures.

Step 6: Demold the cured resin

Peel the mold away from the resin charm while grabbing a charm edge. Be careful if you are using a soft silicone mold as it can tear if you are too rough.

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.

This video shows the techniques I use when casting resin.

Want to learn more about how to cast resin into a silicone mold?

Then you will want a copy of the instantly downloadable book, Resin Fundamentals.  It shares the vital details resin artists and crafters need to know to make something beautiful with resin from day one.  Buy the book now and you can have it to read in minutes!

Unpublished Blog Posts of Resin Obsession, LLC © 2020 Resin Obsession, LLC

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14 thoughts on “How to cast resin into a silicone mold

  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. 🌈

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