Omar Khalid
Kotobukiya's plastic model kits have gained popularity, especially with the release of the Frame Arms Girl anime series. The kits are known for their numerous small parts, which can be initially intimidating for beginners. However, with the right techniques and tools, anyone can successfully paint these plastic figures. This includes understanding the basics of model construction, the types of paint and primer to use, and the importance of disassembling parts before painting to prevent paint seepage and potential damage. Additionally, there are various resources available, such as online communities, books, and blogs, that offer guidance and tips for painting Kotobukiya figures, ensuring that beginners can develop their skills and create vibrant and detailed models.
| Characteristics | Values |
|---|---|
| Painting tools | Airbrush, brush |
| Paint type | Lacquer paint, enamel paint, acrylic paint |
| Paint consistency | Not too thick, not too thin |
| Painting procedure | Paint difficult areas first, then flat surfaces |
| Brush type | Round, pointed brush with fine bristles for corners and concave areas; flat brush for flat surfaces |
| Number of coats | 2-4 coats, allowing each coat to dry before applying the next |
| Surface preparation | Wash with detergent, rinse with water, dry thoroughly |
| Base coat | Primer or surfacer |
| Assembly | Paint pieces before assembling |
| Drying time | 24-72 hours |
| Plastic type | ABS plastic |
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What You'll Learn
Painting with brushes vs. airbrushes
Painting with brushes offers excellent control for painting fine details and small areas of a Kotobukiya plastic model. Brushes can reach tight spaces and intricate parts that airbrushes might miss, making them perfect for detailed work. Painting with brushes is also more accessible for beginners, as the basic techniques are easy to pick up and require minimal setup. Additionally, brushes and paints are relatively inexpensive, and quality brushes can be found at a low cost and will last a long time if properly cared for.
However, painting large areas or base coating with a brush can be slow and labor-intensive, requiring more time and effort than using an airbrush, especially for larger models or multiple miniatures. Achieving a perfectly smooth finish with a brush is also more challenging and can affect the overall look of the model.
On the other hand, airbrushing allows for quick base coating and priming of large areas, saving time when working on large-scale models or when spraying the same colour on a large area. Airbrushes achieve seamless blends and gradients, breaking down paint into very fine particles that create a mist-like spray, allowing for a thin and even application of paint. This spray pattern avoids the uneven application that can occur with brushes and allows for multiple thin layers of paint to build up smoothly without visible brush strokes or texture.
While airbrushes are ideal for large areas, they can be challenging to control for small details, and additional normal brushes may be needed for painting small features. Airbrushes also require a power supply for the compressor to function, which can be bulky and limit where you can paint. They are also more expensive, with a higher initial investment for the equipment, and they are more time-consuming to set up and clean.
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Preparing the plastic for painting
Firstly, disassemble any movable parts before beginning the painting process. This is important because painting movable parts while they are under load can increase the risk of damage. Joints and other movable areas are designed to withstand pressure, but the application of paint can make them more vulnerable. By disassembling these parts, you not only protect them but also ensure better access for painting.
Next, it is important to clean the plastic surfaces to ensure proper paint adhesion and an attractive finish. Start by soaking the parts in a mixture of water and a few drops of neutral detergent, such as dish soap, for 20 to 30 minutes. This will help remove any oil or residue from the surface. After soaking, rinse the parts thoroughly under running water and allow them to dry completely.
Once the parts are dry, it is time to apply a base coat or primer. This step is crucial in creating a protective layer between the plastic and the paint, preventing paint solvents from penetrating and potentially damaging the plastic. Use a commercially available surfacer or primer specifically designed for models. Apply the primer in thin, even coats, spraying in small increments from a distance of about 10 cm (4 inches) away from the part. It may take several coats to achieve an even finish, so be sure to allow adequate drying time between coats.
Before painting, it is also important to consider the type of paint you will be using. Avoid using enamel paint, as it can cause the plastic to degrade over time. Instead, opt for acrylic or lacquer paint. If you are using an airbrush, make sure to use the appropriate thinner to achieve the correct paint consistency. For hand brushing, dilute the paint to a consistency similar to new paint.
Additionally, when working with plastic, it is important to be cautious when cutting or shaving away excess plastic. Use a hobby knife to carefully cut away any unwanted plastic, especially in areas with curved angles. Take your time and work slowly to avoid damaging the part or injuring yourself.
By following these steps, you will effectively prepare your plastic figures for painting, ensuring a smooth and successful process.
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Choosing the right paint
Painting ABS parts of Kotobukiya plastic figures is not recommended due to the risk of damaging them. The paint's solvent (thinner) can penetrate the resin of the parts and vaporize, causing small cracks in the penetrated areas, making the parts brittle. However, if you still want to paint your Kotobukiya plastic figures, there are a few things to keep in mind when choosing the right paint to minimize the risk of damage.
Firstly, it is important to avoid using enamel paint, as it can cause the plastic to degrade and crack, whether it is used as a topcoat or for colour. Instead, opt for acrylic paint, which is a better option for painting Kotobukiya plastic figures. Standard acrylic paint can be used, but it is important to note that priming the surface beforehand is crucial for the best results. The plastic surface is often shiny and slippery, making it difficult for paint to adhere well. By applying a primer or lightly sanding the area, you can create a better surface for the paint to stick to.
Additionally, when thinning paint for easier application, be cautious not to add too much thinner, as this can expose the plastic parts directly to the solvent, increasing the risk of damage. It is a careful balance, as paint that is too thick can be difficult to apply, so thinning it to the appropriate concentration is key. A light coat of paint is recommended, allowing it to dry before applying additional coats to achieve the desired colour.
To further protect the plastic and enhance paint adhesion, consider using a base coat or primer specifically designed for models. Apply the base coat in thin, even coats to create a protective layer that will prevent the paint's solvent from penetrating the plastic. Remember to always test fit the parts before painting and avoid painting them when they are under stress or load, as this can increase the risk of breakage.
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Applying the base coat
Firstly, disassemble the plastic figure before painting. This is because when a large amount of paint is applied, it takes longer to dry, increasing the risk of damage as solvents will be in contact with the plastic for longer. Painting the pieces separately will also ensure that you can reach all areas of the figure effectively.
Next, prepare the plastic pieces by removing any oil from their surface. Soak the parts in water with a few drops of neutral detergent (such as dish soap) for 20 to 30 minutes. After washing, rinse the parts well under running water and allow them to dry thoroughly.
Now you are ready to apply the base coat. It is recommended to use a commercially available surfacer or primer designed for models. Spray the primer in small increments, moving the spray can or airbrush quickly from side to side, maintaining a distance of about 10 cm (about 4 inches) from the part. It is important to note that spraying once will not perfectly cover the surface and may leave some mottling, so be prepared to apply multiple coats. After spraying one part, move on to the next, and then start another cycle until all parts are evenly covered. Depending on the colour of the primer, this may take three to four coats of paint to achieve. Allow each coat to dry completely before applying the next.
If you are using an airbrush, it is recommended to use a lacquer paint and the thinner sold specifically for it. Ensure that the paint is not too thin, as it may become difficult to cover the plastic effectively. Dilute the paint to a similar consistency as new paint. For hard-to-reach areas, such as corners and concave areas, use a round, pointed brush with fine bristles. For flat surfaces, use a flat brush and apply the paint using long, even brushstrokes.
By following these steps, you will effectively apply the base coat to your Kotobukiya plastic figures, creating a protective layer and ensuring an attractive finish for your final paint application.
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Painting unassembled parts
Painting unassembled plastic parts is a delicate process that requires careful preparation and technique to avoid damaging the pieces. Here are some detailed instructions to guide you through the process of painting unassembled plastic parts for a Kotobukiya model kit:
Preparation:
Firstly, it is important to note that painting ABS plastic parts is generally not recommended by Kotobukiya due to the risk of damaging the pieces. The solvent (thinner) in the paint can penetrate and vaporize in the resin, causing small cracks and making the parts brittle. However, if you choose to paint ABS parts, there are techniques to minimize the risk of damage.
Before painting, test fit the parts and adjust the fit if necessary by shaving down joints or other methods. Disassemble movable parts to paint them individually and allow more accessible access to all surfaces. Soak the pieces in water with a few drops of neutral detergent (such as dish soap) for 20-30 minutes to remove any oil. This step ensures better paint adhesion and a smoother finish. Rinse and thoroughly dry the parts afterward.
Painting Process:
To protect the plastic and improve paint adhesion, apply a thin, even coat of primer as a base. Allow the primer to dry completely before proceeding. When applying paint, use lighter coats and allow each layer to dry before adding subsequent coats to achieve the desired colour. This helps reduce the exposure time of the plastic to the solvent, minimizing the risk of damage.
Post-Painting Assembly:
After painting, allow the parts to sit for 24-72 hours, depending on the season, to ensure the solvent has completely evaporated. Once the solvent has evaporated, it should be safe to assemble the parts without risking breakage.
Additional Tips:
- Avoid using enamel paint or enamel thinners as they are known to cause ABS plastic to degrade and crack.
- For panel lining, use a super-fine point pen (similar to those used for art) or apply an acrylic topcoat.
- Consider using an airbrush or rattlecan for a smoother and more efficient application of primer and paint.
Remember, painting ABS parts is done at your own risk, and these methods may not entirely prevent potential damage to the pieces.
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Frequently asked questions
First, disassemble the movable parts before painting and work on areas that are difficult to paint, such as corners and concave areas. Use a round, pointed brush with fine bristles. The paint should not be too thin, but if it is too thick, it can be difficult to cover everything effectively. Dilute the paint so that it is about the same consistency as new paint. Then, paint the flat surfaces. Use a flat brush and make long, even brushstrokes. Apply two or three coats of paint to finish, allowing each coat to dry completely before applying the next. Finally, reassemble the painted parts.
Avoid using enamel paint, as it will cause the plastic to degrade. Instead, use an acrylic primer and topcoat.
Soak the parts in water with a few drops of neutral detergent (such as dish soap) for 20 to 30 minutes to remove any oil from their surface. After washing, rinse the parts well under running water and allow them to dry thoroughly. Then, apply a base coat or primer to create a protective layer and improve paint adhesion.
