Omar Khalid
Stripping paint from plastic models is an essential step in the process of creating a new paint job. This is because starting on a blank canvas will allow you to create the same beautiful effect as you would starting fresh. Removing enamel paint from plastic kits can be done in a number of ways, including using paint stripper, isopropyl alcohol, Easy-Off oven cleaner, brake fluid, Simple Green, or Purple Power.
How to strip enamel paint from plastic models
| Characteristics | Values |
|---|---|
| Project size | Affects the time and effort needed to strip paint effectively |
| Paint type | Enamel paint may be more difficult to remove than acrylic paint |
| Ventilation | Ensure proper ventilation in the workspace |
| Protective gear | Wear gloves to protect your skin |
| Work area | Cover with a towel or rags |
| Containers | Prepare three containers: one with isopropyl alcohol, one with water, and one empty |
| Soaking time | Soak the model in isopropyl alcohol for around 20 minutes or longer for deeper paint penetration |
| Multiple coats | Submerge the model multiple times if there are multiple coats or hard finishes |
| Small pieces | Keep small pieces organized to prevent disintegration of super glue |
| Alternatives | Easy-Off oven cleaner, brake fluid, Simple Green, Purple Power, and caustic soda are also effective alternatives |
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What You'll Learn
Soak the model in isopropyl alcohol
To strip enamel paint from a plastic model, one method is to use isopropyl alcohol. This is a good option because it is an excellent cleaner, a great base, and inexpensive. You will need 99.9% pure isopropyl alcohol, three containers, gloves, and a towel or rags.
First, lay down a towel or some rags to cover your work area. Prepare your containers—fill one with enough isopropyl alcohol to soak the model, fill one with water, and leave the last one empty. Put on a pair of gloves to protect your hands from the chemicals.
Now, carefully place the model into the container with isopropyl alcohol. Make sure the container is large enough to completely submerge the model. Cover the container with a lid and leave it for around 20 minutes. If the paint has not come off, you can leave it for longer—this will allow the alcohol to penetrate deeper and loosen the paint further.
If there are multiple coats of paint or hard finishes, you may need to submerge the model more than once. Additionally, if you are dealing with tiny pieces, be careful as the alcohol may disintegrate the super glue and cause them to fall apart. Keep these pieces organized so that you can glue them back together once the paint has been stripped.
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Use a paint stripper
Using a paint stripper is an effective way to remove enamel paint from plastic models, but it's important to choose a suitable product and follow safety precautions to avoid damage or injury.
Firstly, ensure you are working in a well-ventilated area to avoid inhaling fumes from the paint stripper. Put on a pair of gloves to protect your skin, and lay down a towel or some rags to cover your work area.
There are several paint strippers available that can effectively remove enamel paint. Easy-Off oven cleaner, for example, has been known to strip paint off models. However, it's important to ensure you are using a caustic oven cleaner, as non-caustic versions may not be effective. You can also try Simple Green, a non-toxic and biodegradable option that can be found at Walmart or any auto parts store. Soak the model in Simple Green overnight, and scrub it with a brush in the morning.
Another option is to use brake fluid, which can effectively remove paint but may irritate the skin, so gloves are essential. Soak the parts in brake fluid overnight and then scrub the paint off with sandpaper. Alternatively, you can try Gastrol Super Clean (Purple Power), which is gentler on plastic and will not cause damage. Soak the model in a plastic tub for a day or so, and then use an old toothbrush to scrub the surface.
For more stubborn paint, you can try a stronger paint stripper like Polly Scale or Motsenbockers Lift Off. Polly Scale is known to be effective but is very expensive for the amount you get. Motsenbockers Lift Off is a citrus-based paint and varnish stripper that will not harm plastic as long as it is not left on for too long. It can be cleaned up with water, and it stripped an 1/8 scale iroc body in about 30 minutes.
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Try an oven cleaner
Oven cleaner can be an effective way to strip enamel paint from plastic models, but it's important to take the necessary precautions and be aware of the potential risks.
Firstly, it's crucial to choose the right type of oven cleaner. Opt for a caustic oven cleaner, as non-caustic varieties may not be strong enough to remove the paint effectively. You can identify a caustic cleaner by checking the ingredients list for sodium hydroxide or potassium hydroxide. These chemicals are highly corrosive, so it's important to handle them with care.
When using an oven cleaner, always work in a well-ventilated area to avoid inhaling the fumes. Wear rubber gloves to protect your skin and cover your mouth and nose with a respirator or a face mask. If possible, perform the stripping process outdoors to minimise the risk of inhaling toxic fumes.
To use the oven cleaner, place the plastic model in a zip-lock bag or a sealed container. Spray or apply a thick layer of the oven cleaner onto the model, making sure to cover all painted surfaces. Leave the model in the bag or container for at least an hour, or as directed by the manufacturer's instructions.
After the specified time has passed, remove the model from the bag or container and rinse it thoroughly with water. Use a toothbrush or a soft-bristled brush to gently scrub away any remaining paint residue. You may need to repeat this process multiple times, depending on the thickness and number of coats of paint.
It's important to note that oven cleaners can affect plastic, so it's crucial to monitor the process closely. If you notice any signs of the plastic softening or warping, immediately rinse the model with water to neutralise the chemicals. Always handle the model with care during and after the stripping process to avoid damage.
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Soak in caustic soda and water
To strip enamel paint from plastic models using caustic soda and water, you will need to take the necessary safety precautions. Caustic soda is a corrosive substance that can cause skin and eye irritation, so it is important to wear protective gear, including rubber gloves and eye protection, and to work in a well-ventilated area or outdoors.
Start by purchasing a container of granulated caustic soda, which can be found at hardware stores or pharmacies. Use a bucket or a large container that is made of a safe material for mixing the solution. Fill the bucket 3/4 full with water—it can be warm or cold, depending on the method you choose. Always add the caustic soda to the water, never the other way around, and be cautious when handling the soda as it can cause skin and eye irritation. Add a couple of tablespoons of the caustic soda to the water and stir the mixture until the soda is fully dissolved.
Once the solution is ready, submerge the plastic model parts in the bucket. Let the parts soak for several hours or even overnight. The length of time will depend on the thickness and number of paint coats. After soaking, you can try wiping the paint off with paper towels or using a stiff brush to remove any remaining paint. Rinse the parts with water and ensure that all traces of the caustic soda solution are washed off.
It is important to note that while caustic soda is effective at removing paint, it may take some time and multiple soaks to completely strip away all the paint, especially if there are multiple layers. Additionally, always exercise caution when working with this substance and follow safety guidelines to protect yourself and your surroundings.
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$15.86
Use white spirit
White spirit is an effective way to strip enamel paint from plastic models. It is a type of paint stripper that can be purchased at a hardware store. It is a good option for those who want to remove paint from their models without damaging the plastic.
To use white spirit, you will need to soak the painted model in the solution for a few hours. The length of time will depend on how thick the paint is; thicker paint may require multiple rounds of soaking and scrubbing. After soaking, use a spare toothbrush to scrub off the paint with the same solution. Be sure to wear latex gloves when handling white spirit, as it can be an irritant to the skin.
White spirit is a good option for removing enamel paint, but it may not be as effective for removing acrylic paint. If there is acrylic paint over an enamel primer, the white spirit may get under the acrylic paint and attack the primer. In this case, alcohol or simple green may be a better option for stripping the paint.
It is important to note that white spirit is not the only option for removing enamel paint from plastic models. Other methods include using paint thinner, mineral spirits, or olive oil. It is always a good idea to test different solutions on a small area of the model before proceeding with a full application to ensure that the plastic will not be damaged.
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Frequently asked questions
You can use isopropyl alcohol, white spirits, paint stripper, Easy-Off oven cleaner, brake fluid, Simple Green, or Purple Power.
It depends on the product you are using. For isopropyl alcohol, leave the model soaked for around 20 minutes or longer for deeper paint penetration. For Easy-Off oven cleaner, leave it for about an hour. For brake fluid, soak the model for 24 hours.
Always wear gloves when handling the model and the product to protect your skin. Also, ensure proper ventilation in your workspace.
