1. Starting the Command:

• Launch Autodesk® Fusion®
• Navigate to the DESIGN workspace
• Open the CREATE panel
• Click on the "Helical Sketch" icon or search for "Helical Sketch" in the command search 

2. Creating a Basic Helix:

• Select an axis for the helix (can be a linear edge, construction axis, sketch line, cylindrical face, or two points)
• Choose your input type (Pitch & Revolutions, Revolutions & Height, or Pitch & Height)
• Enter diameter, pitch, and revolution values as needed
• Click OK to create the helical sketch 

3. **Advanced Options:

• Handedness: Choose between right-hand or left-hand helix
• Start Point: Offset the starting point along the axis
• Flip Direction: Reverse the helix direction along the axis
• Variable Pitch: Create a helix with changing pitch along its length
• Variable Diameter: Create a helix with changing diameter along its length
• Taper: Create a conical helix with a specified taper angle
• Create Sweep Planes: Generate construction planes for follow-up sweep operations 

4. Using the Generated Helix:

• The resulting sketch contains a spline curve that defines the helical path
• This curve can be used with the Sweep command to create springs, threads, or other helical features
• Metadata is stored on the curve to aid in subsequent operations

Install:

The installer that ran when you downloaded this app/plug-in from the Autodesk App Store will start installing the app/plug-in. Or, simply double-click the downloaded installer to install the app/plugin.

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.<br>

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

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button.

Or, you can uninstall it from 'Control Panel/Programs and Features' (Windows 10/11), just as you would uninstall any other application from your system.

if you are trying to make threads under 6mm, the profile height cant equal the pitch. shrink it by 1%.