How To Clean Resin Molds

As an Amazon Associate we earn from qualifying purchases.

Could you be trying to learn how to clean resin molds? Well, Resin molds are an essential tool for any resin jewelry maker. They’re the key to making perfect, clean casts that will cause beautiful pieces of wearable art.

But if you don’t take care of your mold, it’ll break down and won’t be usable anymore-which means you’ll need to buy a new one!

So how do you keep your resins mold in good condition? Read on below!

Also read: How To Clean A Waffle Iron

What Is A Resin Mold, And Why Should I Care About Cleaning It?

A resin mold is used to create one or more copies of a design. Resin molds are usually made from silicone, plastic, or metal. Artists commonly use them to produce small runs of custom jewelry, children’s toys, and many other items.

Resin molds should be cared for just like any mold used to create custom parts. They are an investment, and if taken care of, can be reused hundreds or even thousands of times with minimal wear on your end.

How To Clean Your Resin Molds

First, use no harsh chemicals or solvents on your resin mold-only water mixed with simple dish soap is recommended, which is similar to one of the methods on cleaning Shungite. You can purchase a dedicated cleaner made for this purpose or use baking soda to create your cleaner.

Use a cheap baby wipe to remove resin scraps and glitter glue after every use. Clean out your mold before it has completely hardened-when the resin is still “green” and hasn’t fully cured yet.

Once you’ve poured your resin, try to remove any unwanted bubbles or imperfections using a dental pick or pin tool. Please don’t leave your resin molds in direct sunlight for long periods. It can leave them with a yellow or brownish tint.

how to clean resin molds
Image credit:

If your resin molds have any tiny grooves/lines, you can use a pin tool to poke it through the area and clear it out. You can also pour hot water into these areas and let it sit for a few minutes before emptying the water. This will remove anything stuck in these grooves.

You can use a toothbrush to get any stubborn areas of dirt and resin build-up! This is helpful if your resin mold has any small grooves or lines. Gently brush the affected area with the toothbrush and dish soap until it comes out clean.

You can opt to use a drill with a wire brush attachment to get the mold even cleaner and more thoroughly. This will remove any hardened resin residue or dirt stuck in tiny crevices/grooves.

Also read: How To Clean Condenser Coils?

How To Remove Uncured Resin From Molds

If you have a lot of uncured resin in your mold, place the entire thing in warm water and let it sit for 1-2 hours.

You can also add a few charcoal briquettes into the water with your resin mold if there is an excess of uncured resin. The charcoal will help to remove the uncured resin within 12 hours. Be sure to check back in after this time!

If your mold is made of plastic, you can use a heat gun to help soften the uncured resin. Just be careful not to overheat the mold as it could damage it! This will allow you to remove it with ease.

You can also place your resin mold in direct sunlight to help it heat and allow for the uncured resin to be easily removed. Be sure not to leave your mold out in the sun for too long, or it could warp!

You can purchase a specialty product that will remove any leftover uncured resin from your molds. Follow the manufacturer’s instructions, as they usually vary from product to product.

Tips For Keeping Your Resin Molds In Good Condition

You should allow your resin mold to completely dry before removing it from the object after creating a cast with it. A wet resin mold will probably cause problems when attempting to remove it.

how to clean resin molds

If you want to keep track of the number of times, write it on the side near where you will pour your resin.

Keep all resin molds somewhere safe. They won’t be damaged by any moving objects or elements in their environment. This way, you can track how often or when you should clean it! This will prolong the life of your resin mold and keep it in good condition for future use.

Put each part of your resin on a rock after you’ve poured it. This will allow the liquid to dry evenly, causing no damage or residue on the inside of your mold!

Be sure that everything has been completely cured before removing it from the resin mold. It can take much longer to cure fully. This is especially important if you make any large or thick pieces with resin.

Wrap the outside of your resin molds with a paper/towel before placing them in storage. This will help keep any dust off your molds while you’re not using them. Failure to which can clog up the inside and cause problems when pouring or removing your cast.

Keep your resin mold away from any abrasive materials. It that can scratch up the surface and cause its appearance to change.

Don’t pour the wet resin into your silicone molds. This will probably damage the finished product and cause problems when releasing it from the mold.

The thicker or larger you need your parts to be, the longer you will need to allow your resin to cure before removing it from the mold.

This is especially important if the part needs support or uses anything other than simple, clear resin.

Also read: How To Clean Throw Pillows?


It is crucial to know how to clean resin molds. Keeping your resin molds clean is important to avoid bacteria or residue build-up. We’ve listed some helpful ideas and tips for cleaning your resin molds. And well as what you should and shouldn’t be doing!

To store your resin molds, always place them somewhere safe. They won’t be damaged by other objects or elements in their environment. Resin molds should never be soaked for more than a few minutes. They could warp or develop bubbles in the silicone.