4 Tips for Keeping Resin Molds Like New

How do you Keep Resin Molds Like New?

Truth be told, when you finish a project, and when everything is cured and unmolded, you can very easily remove the resin by simply letting it cure, then peeling it off. After that whipping, everything with a 91% Isopropyl alcohol solution will finish the job. However, things don’t always go as planned. Thus it is essential to know some extras.

This being said, let’s check out the most valuable tips and tricks for cleaning silicone molds.

1. Release agent.

Silicone is a non-stick material. This is why a new mold will work great for the first few uses without raising too many problems. The reason for that is a release agent is used when manufacturing these molds. Yet, in time the material loses this layer of an agent, you will need to replace it.

To do so, you will need to purchase a special release agent spray. It doesn’t matter what brand you choose. It doesn’t take much effort, all you need is to just shake it and spray a thin layer on your molds. If you are not entirely sure how to utilize it, just follow the instructions written on the package.

2. Soap and water.

This part might seem redundant, but actually, it’s an important step. However, you should know to never use any abrasive tools such as scrubbing sponges, toothbrushes, or even steel wools when cleaning the mold. The reason? They will damage the surface, leave unwanted impressions in your resin castings, and can make your silicone stick. So by gently cleaning the mold with soap and water, you can remove any leftover remnants of resin and not destroy the form.

3. Don't torch.

Whatever the project you are working on, never torch your epoxy resin while in a silicone mold. If you do this, you will make the silicone break down and weaken, making the mold deteriorate more quickly, causing your current and future casts to stick to the mold.

4. Don't over-stretch.

When you demold the epoxy resin casts, make sure not to over-stretch the silicone molds. Why? Because by doing so, you will make the cavity turn dull, and form tiny tears that will reduce the lifespan of the mold.


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