Installing the add-in, you find it down under solid/create.

Starting it, a wheel is shown with standard settings and a window to change settings. 

Changed settings immediately lead to a new wheel preview.

If you give in parameters that do not fit, a failure message with advice will appear and no wheel will be drawn. Just change the given setting, and the wheel will appear again. 

The app draws a useful number of waves around the wheel. With the setting "Rope Flexibility," you can enlarge or reduce this number. 

The setting "Make Gear" automatically combines the two pices of the wheel by a 3D-printable gear. If you turn it off, the pices will just be plugged together

The setting "Gap" enlarges or reduces the space between the two parts.

As soon as the previewed wheel meets your demand, press OK. 

Install:

1. Download the installer from the Autodesk App Store.

2. Right-click on the "Downloads" folder and select "Open in Finder".

3. Right-click on the "RopeGrabWheel_macos.pkg" -> "Open With" -> "Installer".

Uninstall:

You can unload the add-in without uninstalling it by clicking the "Stop" button when the add-in is selected in the list box on the "Add-Ins" tab of the "Scripts and Add-Ins" dialog.

Unchecking "Run on Startup" causes the add-in not to be loaded in future sessions of Autodesk® Fusion®.

- Navigate to the ./ApplicationsPlugins folder and select the app bundle you want to uninstall

- Either drag the app bundle to the Trash or right-click and select “Move to Trash”

- Right-click on the Trash-Can and select “Empty Trash”

- If you prefer keystrokes, you can also just select the app bundle and then hit Command+Delete to move the app to Trash, then empty the Trash and the app will be removed.