A fully parametric spring optimized for 3D printing.
Modify just a few main parameters, and the geometry adapts automatically.

To be able to change parameters, go in timeline between the groups. Change Parameters. Go in timeline to the end.

Main parameters:

• Length (Determines the number of coils)
• Thickness (Influences stability and width)
• Inside Diameter (Defines the spring's opening)

Key Features:

• Easy to Adjust: Only three main parameters, all others are calculated automatically.
• Robust: Formulas with minimum and maximum limits ensure the geometry always works.
• 3D-Printer Friendly: Default air gap and pitch are optimized for most 3D printers.

Instructions:

1. Open the file in Fusion 360.
2. Adjust the parameters Spring_Diameter_Inside, Spring_Thickness, and Spring_Length.
3. Print the Spring and the Upper and Lower Supports together as one.
4. After printing, you can easily remove the Supports.

Of course there are limits, I don't know them all yet.
I needed this for a project to make a spring loaded Twist Lock.