> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Example: Creating a Thermal Bonded Contact

The Heat Sink FE Model below is made of two **FE Components**: the Heat Sink (gray) and the Base (red). It is assumed that the Base is the Independent mesh, while the Heat Sink is the Dependent mesh.

<Frame>
  <img src="https://files.learn.ntop.com/lessons/example-creating-a-thermal-bonded-contact/341_8_1-instructor_5u3dqlmop2xik78c9dl5vykpg_public_1647696761_HS1.1647696761252.jpg" />
</Frame>

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<Frame>
  <img src="https://files.learn.ntop.com/lessons/example-creating-a-thermal-bonded-contact/341_8_2-instructor_5u3dqlmop2xik78c9dl5vykpg_public_1647697518_Animation.1647697518011.gif" />
</Frame>

Select the top face of the Base (red) as the Independent part (green face entities) of the **Thermal Bonded Contact** using **FE Boundary by Flood Fill**.

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<Frame>
  <img src="https://files.learn.ntop.com/lessons/example-creating-a-thermal-bonded-contact/341_8_3-instructor_5u3dqlmop2xik78c9dl5vykpg_public_1647697690_Animation.1647697690434-1.gif" />
</Frame>

Select the mating face of the Heat Sink (gray) to the Base (red) as the Dependent part (green node entities) of the**Thermal Bonded Contact**using**FE Boundary by Flood Fill**.

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<Note>
  **Note**:the heat sink is presented upside down for viewing the mating surface.
</Note>

<Frame>
  <img src="https://files.learn.ntop.com/lessons/example-creating-a-thermal-bonded-contact/341_8_4-thermal-contact.gif" />
</Frame>

Finally, a **Thermal Bonded Contact**(red box) is created between the Heat Sink and the Base

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