Fusion’s parameter system is a powerful tool for automating and controlling design aspects. Whether you’re used to software like SolidWorks or new to parameters, Fusion offers an intuitive approach. This guide will show how to use parameters to make designs more flexible and efficient, with examples of applying them to control dimensions and manage complex part relationships.

What are parameters in Fusion?

Parameters in Fusion allow you to define key values that control the geometry of your design. These values can range from basic dimensions like length, width, and height to more complex features, such as the number of holes in a pattern. Once set, these parameters are linked to the model, ensuring that any changes automatically update the design.

For example, let’s say you define a parameter for the length of a part and set it to 300 millimeters. If you decide to increase this value to 400 millimeters, Fusion will automatically update the design to reflect this change. This saves time, especially when working with complex models, as it allows you to adjust multiple elements simultaneously by modifying a single parameter.

Using basic parameters and operators

Fusion also allows you to perform mathematical operations with parameters. You can use simple operators like addition, subtraction, multiplication, and division to control the relationships between different parts of your design.

For instance, imagine you’re working with a model that has a series of holes. You could define a parameter for the hole diameter and another for the hole offset, which controls the spacing between the holes. By setting the hole offset to a value based on the hole diameter (e.g., hole diameter × 2), any changes to the diameter will automatically adjust the spacing between the holes as well. This adds flexibility to your design and ensures that everything remains properly aligned as you make updates.

Incorporating functions: Floor, ceiling, and round

Fusion parameters also support more advanced mathematical functions, such as floor, ceiling, and round. These functions are particularly useful for ensuring that certain values stay within specific ranges.

For instance, if you’re designing a plate with a specific number of holes, you may want that number to round down to the nearest whole number. The floor function ensures that even if the plate length isn’t an exact multiple of the hole spacing, the number of holes is calculated accurately. Similarly, the ceiling function rounds up to the next whole number, while the round function rounds to the nearest whole number.

Let’s say you have a plate with a length of 399 millimeters, and you’re using the floor function to calculate the number of holes. If the hole spacing is set to 50 millimeters, Fusion will calculate that the plate can fit seven holes. If you increase the length to 400 millimeters, the number of holes increases to eight. This kind of control allows for precise adjustments to your design.

Driving complex designs with parameters

As you become more comfortable with parameters, you can use them to manage more complex models. Take, for instance, a model of a gate or a fence where the length, height, and board thickness are defined by user parameters. By linking these parameters to the overall dimensions, Fusion allows you to easily adjust the number of boards based on the width of the boards and the spacing between them.

If you change the board width from 6 inches to 3 inches, Fusion will automatically increase the number of boards to fit the overall length of the gate. Similarly, adjusting the board thickness or spacing will result in changes to the number of boards. This level of automation not only speeds up the design process but also ensures consistency and accuracy.

Using conditional statements for greater flexibility

Fusion also supports conditional statements, such as if-else, within parameters, which allows for even greater control. For example, you could use an if-else statement to change the dimensions of a part based on a specific condition.

Let’s say you’re designing a grill and want to change the length based on whether you set a specific parameter to 0 or 1. Using an if-else statement, you could set the grill length to 26 inches if the parameter is 0 and 36 inches if the parameter is 1. This kind of logic allows you to build models that automatically adjust based on simple inputs, making it easier to create multiple versions of a design without needing to manually edit each one.

Configurations and parameter management

One of Fusion’s most powerful features is the ability to use parameters in configurations. Configurations allow you to create multiple versions of a model with different parameter values. For example, if you’re designing a product that comes in different sizes, you can create configurations for each size by setting up different parameter values.

This means you could have one configuration where the length of the product is 26 inches and another where it’s 36 inches. Switching between configurations automatically updates the 3D model, so you can see how each version looks without having to manually change the parameters each time.

Parameters in Fusion are essential for making designs more efficient and adaptable. Whether controlling basic dimensions or managing complex relationships between parts, parameters automate key aspects of the modeling process. Using operators, functions like floor and round, and conditional statements, you can create responsive models that adapt easily to changes. Additionally, configurations allow you to manage multiple design versions without rebuilding from scratch. For more in-depth guidance, Fusion’s help documentation provides a comprehensive look at using parameters and advanced tools.