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Removing Cured Resin From Moulds

What To Know About Removing Resin Art From A Mould

Using moulds in resin crafting allows for intricate and detailed designs to be created. However, once the resin has cured, it can be challenging to remove the mould from the hardened piece without damaging it. To avoid this, it is important to properly prepare the mould before pouring resin. Rushing or forcing it out could result in breaking or damaging both your piece and mould. With proper preparation and careful removal techniques, you can create beautiful resin pieces without worrying about damaging your moulds during removal.

To effectively remove moulds from cured resin, there are a few techniques that can be used depending on the type of mould and resin being used.


One method is to gently tap or twist the mould until it loosens from the resin. This technique works best with flexible silicone moulds as they have some give and allow for easy removal.

Another approach is to use heat by placing a hairdryer on a low heat setting near the edges of the mould for a few seconds. The warmth will soften both the mould and resin slightly, making it easier to pull apart without causing any damage. 

For more stubborn moulds or those made with firmer materials such as plastic or metal, using a release agent before pouring in your resin can make removing them much simpler.

Overall, with some patience and careful techniques, removing cured resin from moulds can be done successfully without any damage to your finished product.

How To Release Casting Resin From A Mould?

The best method of releasing a casting resin is to first make sure the mould is clean and free of any debris or residue before you pour the resin inside. 

Next, apply a thin layer of mould release agent such as petroleum jelly or silicone spray to the inside of the mould. This will help prevent the resin from sticking to the surface of the mould.

Once you have prepared your mould, mix your casting resin according to the manufacturer's instructions and pour it into the mould. It is important to work quickly as casting resin sets relatively fast.

After pouring in your resin, gently tap or shake the sides of the mould to release any air bubbles that may have formed during pouring. You can also use a toothpick or small stick to pop any larger bubbles that rise to the surface.

Once you are satisfied with how many bubbles have been removed, leave your casting resin in its mould for at least 24 hours before attempting to remove it. This ensures that it has fully cured and hardened.

When ready, carefully remove your piece from its mould by flexing or bending it slightly around all edges until it pops out on its own. If necessary, use a small tool like a razor blade or craft knife along stubborn edges.With these simple steps, you can successfully release your casting resin from its mould.

Which Release Agent For My Mould?

When working with resin, it is important to use a release agent in order to ensure that the cured resin can be easily removed from the mould or surface it was poured onto. There are several options for release agents that can be used with resin. 

One popular choice is petroleum jelly, also known as Vaseline. This can be applied thinly and evenly onto the mould before pouring in the resin. Cooking spray is another commonly used release agent, but make sure to choose one without added flavourings or oils that may affect the curing process of resin. Other options include silicone-based sprays and waxes specifically designed for use as release agents with resins. Whichever option you choose, make sure to properly apply and distribute it on all surfaces of your mould or surface to achieve a smooth and easy release of your finished resin piece.

An important factor to consider when using a release agent with resin is the type of mould or surface you are working with. For silicone moulds, it is best to use a water-based release agent, as petroleum jelly and other oil-based agents can cause the silicone to break down over time. If you are using a non-porous surface such as glass or metal, make sure to thoroughly clean and dry it before applying any release agent. 

It's also important to note that while release agents aid in removing cured resin from moulds, they may also affect the finish of your final piece. Some types of release agents may leave behind a residue or film on your resin which could impact its clarity and shine. It is always recommended to do a test run on a small piece before using the chosen release agent on your main project.

Overall, choosing the right release agent for your specific project will greatly improve your experience working with resin. Properly applying and distributing the chosen agent will not only ensure easy removal but also help achieve desired results.

For more resin art insights head over to our learning with resin pages and learn how to cure resin without bubbles and how to make a resin clock. Just Resin your Australian made epoxy resin manufacturer and online resin supplies.


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