# Modeling in Ansys SpaceClaim - Lesson 3

In this lesson, we will learn how to build some simple solid models like a heat sink and a bike crank using SpaceClaim.

### Heat Sink

#### What is a heat sink?

A heat sink is:

• A metallic component used to remove heat from a body or system to maintain an optimum temperature​
• Commonly found in computer processors and other parts that generate excess heat

#### Modeling approach:​

Our approach to modeling will begin by analyzing the technical drawing. Download the technical drawing required for creating this heat sink model here. Once we understand its characteristics, we can outline a plan for creating the heat sink model. With a plan in place, we can begin creating the model.

Check out the video below to learn the step-by-step procedure for creating a heat sink model in SpaceClaim.

#### Recap:

This heat sink modeling session covered several different topics. You learned how to use sketching tools such as Rectangle and Circle to begin creating geometry. You then utilized the Pull, Move and Pattern tools to create and modify the geometry of the solid body. Finally, you made alterations to the appearance of the design using various coloring and shading tools.

### Bike Crank

#### What is a bike crank?

A bike crank is a lever arm that gives the bicycle rider a mechanical advantage when pedaling.

When the rider presses their feet on the pedals, the bike crank revolves and causes rotation of the sprocket wheel, which drives the chain, which in turn drives the rear wheel​.

#### Modeling approach:​

Our approach to modeling will begin by analyzing the technical drawing. Download the technical drawing required for creating this bike crank model here. Once we understand its characteristics, we can outline a plan for creating the bike crank model. With a plan in place, we can begin creating the model.

Check out the video below to learn the step-by-step procedure of creating a bike crank model in SpaceClaim.