Building plastic model cars is a fun hobby for many people. It lets you create small, detailed cars that look real. One way to make your model car look better is by using a black wash. A black wash adds depth and shows tiny details on the car. It makes your model look like it has real dirt or shadows. This guide will explain how to do a black wash step by step.
What Is a Black Wash?
A black wash is a thin, dark paint. You use it on your plastic model car to show lines and small details. It is not thick paint. It is more like very dark water with paint in it. When you put it on, it goes into the small cracks and spaces. Then, it dries and makes shadows. These shadows make your model car look more real and old.
Why Use a Black Wash on Plastic Model Cars?
- Shows details: The black wash makes small parts stand out.
- Adds depth: It makes the car look less flat and more real.
- Creates shadows: It looks like dirt or old paint.
- Easy to use: Even beginners can try it.

Credit: www.amazon.com
Materials Needed for Black Wash
Before you start, get these materials:
| Material | Purpose |
|---|---|
| Black acrylic paint | Main color for the wash |
| Water or thinner | To make paint thin |
| Small brush | To apply the wash |
| Paper towel or cloth | To remove extra wash |
| Plastic model car | The model to work on |

Credit: mikelanemods.com
Step 1: Prepare the Wash Mixture
First, mix the black paint with water or thinner. Use about one part paint to ten parts water. The mixture should be very thin, like dark tea. If it is too thick, it will cover the model too much. If it is too thin, it will not show well. Try to find a good balance.
Step 2: Clean Your Model Car
Before applying the wash, clean your model car. Use a soft cloth to remove dust and dirt. If your model is freshly painted, wait for the paint to dry completely. This step helps the wash stick better and look nice.
Step 3: Apply the Black Wash
Dip your small brush into the black wash. Then, gently paint it over the model car. Focus on areas with small details, like panel lines, grills, and doors. The wash will flow into cracks and lines. It may look messy at first. That is okay.
Step 4: Remove Extra Wash
After applying the wash, wait a few seconds. Then, use a clean paper towel or cloth. Lightly wipe the model car’s surface. This removes the extra wash from flat areas. The black paint stays only in the cracks and details. Be gentle to avoid removing too much wash.
Step 5: Let the Wash Dry
Let your model car dry fully. Drying can take 30 minutes or more. Avoid touching the model while it dries. Once dry, you will see the shadows and details clearly. If needed, you can add another layer of wash for more effect.
Tips for a Better Black Wash
- Use thin layers: Thick wash can cover details.
- Work slowly: Take your time to apply carefully.
- Practice first: Try on a spare part or old model.
- Clean your brush: Rinse it often to avoid clumps.
- Use good light: Work in bright light to see details.
- Use matte paint: Glossy paint may not work well for wash.
Common Mistakes to Avoid
- Using thick paint: It hides details instead of showing them.
- Not wiping extra wash: Leaves dark spots on flat surfaces.
- Applying wash on wet paint: Can cause colors to mix and look bad.
- Using wrong brush size: Too big brushes can be hard to control.
- Not letting wash dry: Can smudge or damage the model.
How to Clean Your Brushes After Washing
After you finish, clean your brushes well. Use water for acrylic paints. Swirl the brush in water and wipe on a cloth. Repeat until the brush looks clean. Dry the brush before storing it. This keeps your brush soft and ready for next time.
Extra Ideas to Make Your Model Car Look Better
Besides black wash, you can try these ideas:
- Dry brushing: Use a light color to highlight edges.
- Weathering: Add rust or dirt effects for realism.
- Decals: Stick on small stickers for logos or signs.
- Clear coat: Protect your paint with a clear finish.
Final Thoughts
Doing a black wash on your plastic model car is easy and fun. It makes your model look more real and detailed. Remember to use thin paint, work slowly, and clean extra wash. With practice, your models will look better every time. Try it today and enjoy your hobby more.
Frequently Asked Questions
What Is A Black Wash In Plastic Model Cars?
A black wash is a thin paint layer that highlights details and adds shadows on models.
How Do I Apply Black Wash On Plastic Models?
Use a fine brush to apply thin black paint over panel lines and details, then wipe excess.
Why Use Black Wash Instead Of Regular Paint?
Black wash brings out small details and creates a realistic worn effect on models.
Can I Use Black Wash On Painted Plastic Models?
Yes, apply black wash gently over dry paint to enhance details without damaging the base.