To strip paint from plastic models, the most common and effective method is soaking them in isopropyl alcohol.
Here's a breakdown of the process:
1. Preparation:
- Gather your supplies: You'll need:
- Isopropyl Alcohol (IPA) - 80% or higher is recommended. Higher concentrations generally work faster.
- A container with a lid - This should be large enough to fully submerge the model. Glass or plastic containers work well.
- A soft-bristled toothbrush - An old toothbrush is perfect.
- Gloves - To protect your skin from the IPA.
- Paper towels or a cloth - For cleaning and drying.
- Optional: A strainer or colander - To easily remove the model from the IPA.
2. Soaking the Model:
- Submerge the model: Place the plastic model in the container and completely cover it with isopropyl alcohol.
- Seal the container: Secure the lid to prevent evaporation and keep the fumes contained.
- Soak for the appropriate time: The soaking time depends on the type of paint and primer used. Start with a few hours and check periodically. Some models may require overnight or even longer soaking.
3. Removing the Paint:
- Remove the model: Carefully remove the model from the isopropyl alcohol. A strainer can be helpful for this.
- Scrub gently: Use the soft-bristled toothbrush to gently scrub the paint off the model. The paint should be softened and come off relatively easily.
- Rinse with water: Rinse the model with clean water to remove any remaining paint residue and isopropyl alcohol.
- Repeat if necessary: If some paint remains, repeat the soaking and scrubbing process.
4. Drying:
- Dry thoroughly: Allow the model to air dry completely before painting or priming. You can use a paper towel or cloth to gently pat it dry.
Important Considerations:
- Ventilation: Work in a well-ventilated area, as isopropyl alcohol fumes can be irritating.
- Plastic type: While isopropyl alcohol is generally safe for most model plastics, it's always a good idea to test a small, inconspicuous area first to ensure it doesn't damage the plastic.
- Alternative stripping agents: While IPA is the most common choice, other options exist, such as Simple Green or specialized model paint strippers. However, always research their compatibility with plastic models.
- Primer matters: Some primers are more resistant to stripping than others.
- Super Glue: Isopropyl alcohol will not dissolve super glue. If parts of your model are assembled with super glue and you are trying to disassemble it you will need to look at using a debonder.
