We get questions about our silicones all of the time. We have compiled a list of these frequently asked questions so it can hopefully help answer your questions as well.

Do I have to use a vacuum chamber?

Air can get trapped during pouring and mixing of the silicone. In the end, this can show up on the surface of the mold which will ultimately affect the castings. While you can use the silicone without the vacuum chamber, it is recommended that you use one. The higher viscosity silicone needs to be put in a vacuum chamber to remove air bubbles. You can find vacuum chambers for $100+.

What is the difference between 1025T and 1040T

They are different durometers. Durometer measures the hardness which takes into effect the flexibility and/or hardness. 1025T is a little more flexible and softer than 1040T. The higher the durometer number, the harder the material.

What is the difference between tin cure and platinum cure?

Tin cure is a lower viscosity silicone. It is easier to use and cures quickly. Platinum silicone is a higher viscosity, has a higher tear strength and is more durable. Platinum cure silicone has great chemical resistance and can be used under high stress and pressure.

How long is cure time?

Typically, it takes 24 hours to cure. If the temperature is cold, it may take longer. It is necessary to make sure the mold is completely cured before removing it from the container.

Can I use fiberglass and resin in a silicone mold?

Usually, a casting material such as resin, polyurethane, wax etc. are used in a silicone mold. Fiberglass and resin could be used in a silicone mold but it is not ideal. Fiberglass may not pick up the detail generally desired when using a silicone mold.

How hard is it to make a silicone mold?

Working with silicone can be easy if you follow the instructions and have all the materials ready before starting. Measurements should be taken before hand to figure out how much silicone is needed. Mixing accurately is also imperative.

How do I care for silicone molds?

It is important to store your silicone mold in a cool, dry area. It should be kept away from heat. It is also important to not stack things on top of it. The silicone part A and part B containers should also be stored in a cool, dry area before use. This will give it a longer shelf life.

What temperature should you work in when molding?

Room temperature is ideal to work in. Temperature and humidity can affect the curing process. Working in a controlled environment will provide the best results.

Conclusion

Still have questions? Don't hesitate to reach out to our customer service team. We are always happy to help. You can email us at sales@artisilsilicone.com or call us at 1-855-583-2385.