Hi!
Creating a plastic material in Maya 2018 using legacy shaders involves using the traditional shading network, such as Lambert, Blinn, or Phong shaders. Here's a step-by-step guide to creating a plastic material using the Blinn shader:

1. **Open Maya 2018 and Create a New Scene:**
- Launch Maya 2018 and start a new scene or open an existing one.

2. **Create a Blinn Shader:**
- Go to the `Hypershade` by clicking on the `Hypershade` button in the `Rendering` shelf or by selecting `Window > Rendering Editors > Hypershade`.
- In the `Hypershade` window, create a new Blinn material by clicking on the `Blinn` icon under the `Surface` tab or by selecting `Create > Maya > Materials > Blinn`.

3. **Rename the Blinn Shader (Optional):**
- It's good practice to rename your shader to something descriptive like `Plastic_Blinn`.

4. **Adjust the Blinn Shader Attributes:**
- Select your new Blinn material in the `Hypershade` and open the `Attribute Editor`.
- In the `Common Material Attributes` section, adjust the following properties:
- **Color:** Set the `Color` to your desired plastic color. This is the base color of the plastic.
- **Specular Color:** Set the `Specular Color` to white or a light gray to give the plastic its shiny appearance.
- **Eccentricity:** Adjust the `Eccentricity` to control the spread of the specular highlight. A lower value gives a tighter highlight, while a higher value gives a broader highlight. For plastic, a value between 0.2 and 0.4 is typically good.
- **Specular Roll Off:** Adjust the `Specular Roll Off` to control the intensity of the specular highlight. A value between 0.5 and 1 works well for plastic.
- **Reflectivity:** Adjust the `Reflectivity` to control how reflective the plastic appears. A value between 0.2 and 0.5 is usually appropriate.

5. **Assign the Shader to Your Object:**
- Select the object you want to apply the plastic material to.
- Right-click on the Blinn material in the `Hypershade` and select `Assign Material to Selection`.

6. **Render and Fine-Tune:**
- Render your scene to see how the plastic material looks.
- Return to the `Hypershade` and adjust the shader properties as needed to achieve the desired appearance.

Here is a basic summary of the key settings for a plastic material using a Blinn shader:

- **Color:** Your choice of plastic color.
- **Specular Color:** White or light gray.
- **Eccentricity:** 0.2 - 0.4.
- **Specular Roll Off:** 0.5 - 1.
- **Reflectivity:** 0.2 - 0.5.

These settings should give you a good starting point for creating a plastic material in Maya 2018 using legacy shaders.

Help this helps others!

LAO