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Important Information About Custom Silicone Molds

by Nice Rapid | Aug 01,2022 | Silicone Molding

The use of silicone is widespread. Silicone molds have a wide range of uses, from automotive parts to medical equipment, household items, and other consumer goods. Since the silicone components that end up in consumers' hands today have undergone incredibly precise and technical operations, purchasing, and using silicone molds is a wise decision.

The following fundamental information regarding custom silicone molds should be known to everyone.

Advantages of Custom Silicone Molds

Many people are perplexed as to why you would use this mold when so many others are on the market. The truth is that because liquid silicone is so flexible, anything you add to it can be completely taken out after it has dried. You don't need to be concerned that it will get stuck and compromise your final product.

Another advantage is that it is completely non-toxic, making it safe to use around children. Additionally, this substance has no known allergies, which is a huge plus. Yet, for some reason, beginners use it.

Silicone filter mold for kitchen

The process is not expensive

One of the most prevalent lies about silicone molds is that they are expensive. False! It might cost a lot at first. However, over time, it is more cost-effective because of its durability. When properly maintained, silicone molds can last for many years.

Silicone is a low-cost manufacturing material. For instance, silicone molds are the best material for a fast cycle time if you are starting a manufacturing business. This means that even though a high volume of silicone must be produced, the quality won't suffer if the pace of production is sped up.

A longer lead time and preparation are typically needed due to the precision required when molding. And once the mold is made, it remains and usually functions. There is also a lower chance of the silicone mold being damaged and destroyed, and you don't have to create one from scratch.

Determining the hardness level

In creating custom silicone molds, it is vital to determine the hardness level first. The silicone material is like liquid and is soft to the touch. At this stage, there is not much you can do about it. However, after curing, the material becomes more rigid and more elastic. How elastic it can be will depend on how much hardener is used. If it's too much, it won't be flexible, stretching will lead to cracks, and every product you make will have imperfections.

It is challenging to work with silicone, and you need to master it. If you don't have enough time to learn about it, we recommend outsourcing your project to create custom silicone molds.

Here is a quick look at the degrees of hardness for silicone:

0 to 20: This level will give you a lot of flexibility, but it might be challenging to work with.

20 to 40: It will deliver less flexibility, but the material will be very stable. There won't be any cracks or fractures, and the mold will not melt quickly.

40 to 80: This is the highest degree of hardness, making the mold firm but not elastic. It has stress resistance but is also brittle.

Choosing the hardness for your custom silicone mold will depend on the type of project. You will need to use prototyping techniques until you understand the particular hardness you are aiming for.

Creating Custom Silicone Molds

It would be best if you first built a frame to begin the process of making your mold. The structure must be correctly constructed with the appropriate materials and sealed tightly. If it is not shut securely, the silicone may begin to leak, ruining the mold's shape. Glass should not be used as you will not be able to remove the liquid silicone from it.

After constructing the frame, you should start blending the liquid silicone. If you don't have any wood, you can use the back of a painting brush as a mixing tool. The mixing process will only take a few minutes.

Spray oil on the frame once the mixture is ready. Verify what type of oil to use before you spray it because some could harm the silicone and wreak havoc on your project. Pour the desired amount of silicone slowly, wait for it to harden, and then you can remove it. You will still have enough of the material if it doesn't work out the first time to try at least a few more times, and you'll get it right.


Creating custom silicone molds can be challenging, but using our essential pointers above can help you with your DIY project. For large-scale custom silicone mold production, you can contact Nice Rapid. It can accommodate your project with the proper silicone molding technique and guarantee satisfactory results.

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