Mold-Cast Anything with Silicone and Dish Soap

Mold-Cast Anything with Silicone and Dish Soap

Oct 30th 2023

In the world of DIY, creating custom molds with silicone and dish soap is easy, low-cost, and versatile. This technique opens up endless possibilities for resin casting and clay sculpting. Whether you’re a home improvement enthusiast or an aspiring artist, knowing how to mold and shape your own designs can take your creative endeavors to the next level.

Materials and Tools

To embark on your silicone mold casting journey, you’ll need a few essential materials and tools. The star of the show is silicone rubber. This flexible and easy-to-work-with substance is the foundation of your mold. It plays a key role in capturing the intricate details of your objects. Alongside the silicone rubber, having a good-quality epoxy resin is a must.

This resin will bring your creations to life and give them a professional finish. Additionally, you’ll require dishwashing liquid, which serves as a key ingredient to enhance the mold-making process, enabling you to shape the silicone without it sticking to your gloves To put it all together, you’ll need a caulking gun to apply the silicone rubber neatly and accurately, ensuring your molds include all the fine details of your original object.

Mixing and Applying the Silicone Mold Material

Once you’ve gathered your materials, the next step is mixing and applying the silicone mold material. Start by using your caulking gun to dispense the silicone rubber into a disposable container filled with room-temperature water. Add a small amount of dishwashing liquid or other soap to the water. The soap helps keep the silicone in a solid mass so that you can work it around the object you wish to mold.

Thoroughly mix the silicone until you achieve a smooth, consistent blend. This is the point where you can get creative, as you have the freedom to add colorants or other additives to your mixture for unique, custom molds. Once your silicone is well-mixed, it’s time to carefully and evenly apply it to your object, ensuring that all the details and contours are accurately captured.

Place the object into the center of the silicone blob and press it around it. Make sure you will be able to withdraw the item once the silicone has cured. So don’t push the silicone over the top edge of the item. Using a release spray before applying the silicone rubber can facilitate the extraction process, ensuring that your object easily separates from the cured silicone.

Curing the Mold

After you’ve expertly pressed your silicone rubber around the object of your choice, it’s time to let the magic happen. Take the silicone from the container of water and place it on waxed paper or another nonstick surface to cure.

Depending on the type of silicone you’ve used, the curing time may vary, but typically it takes a few hours overnight. Patience is key here. As the silicone cures, it solidifies around your object, transforming it into a perfect negative replica. This silicone caulk will serve as the blueprint for countless resin creations to come.

Using the Mold

With your cured silicone in hand, the creative possibilities are nearly endless. You can now use it as a template to cast various objects and materials. You can use epoxy resin for crafting intricate jewelry pieces, candles for personalized home decor, or ice cubes to add a fun and unexpected twist to your drinks. If you plan to use the cast for food items, be sure to use food-grade silicone!

Making your own molds means you can reproduce household objects, action figures, and so much more, allowing you to customize and create unique items that suit your tastes and preferences. The silicone shape you’ve crafted provides a remarkable level of detail. You can also experiment with different materials and colors, giving life to your imaginative designs in a truly remarkable way.

Cleaning and Maintenance

As with any creative endeavor, proper cleaning and maintenance of your silicone molds are essential to ensure their longevity and continued usability. After using a silicone mold, it’s crucial to remove any leftover residue from the materials you’ve cast. Depending on the casting materials, this may involve cleaning with warm, soapy water, or using solvents if necessary.

Gently scrubbing the mold’s interior will help maintain its surface quality and ensure that your next project retains all the fine details. Avoid using abrasive tools or harsh chemicals, as these can damage the mold. Once cleaned, allow it to air dry or pat it dry with a soft cloth to prevent water spots.

Proper storage is equally vital to extend the lifespan of your silicone molds. Ensure that the molds are completely dry before storing them to prevent the growth of mold or mildew. It’s a good practice to store them in a cool, dry place, away from direct sunlight, as prolonged exposure to UV rays can degrade the silicone rubber over time.

To prevent deformation, it’s advisable to store the molds flat or with minimal bending. By following these cleaning and storage guidelines, you can enjoy the continued use of your silicone casts for countless creative projects, saving you time and money in the long run.


The art of mold-casting with silicone and dish soap empowers DIY enthusiasts and crafters to bring their imaginative visions to life. By mastering the simple yet versatile process outlined here, you can unlock a world of creative potential in the comfort of your own home, creating custom molds to shape a wide array of unique and personalized items for various projects. Whatever you plan to do with silicone, Silicone Depot has every kind of product for every need!