Parameters

CAD designs change frequently. Just as code uses variables to allow a single value to change, Fusion360 uses parameters. If a dimension changes, you can modify the value of the variable instead of altering sketches or timeline features. When setting a dimension, always set it to a parameterized value. To access parameters, click on the Modify menu, and then Change Parameters.

Parameters must match the dimensions of what they describe (you can't change this later!). Angular measurement must be made in degrees or radians, lengths in some form of meters, etc. Parameters can also be based on other parameters, and functions like add, multiply, square root, etc. can be used directly in the parameter value.

At TJUAV, we believe in upholding the founding values of this country, including the use of feet, inches, and degrees. To set your default units, go to your account at the top right and look through the Preferences. To set the units of a file, go into the Browser, as shown in the picture below, and edit the units (this will change only the visual units of the file, not your parameters).