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Tension springs anyone?

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Tension springs anyone?
Anyone got advice on how to model tension springs? or alternatively where I can get a spring part file that can be used with VariCAD?
Further Clarity
I have worked out how to use the Helix command to make the basic spring helix; but how do we get a neat 90 degree hook or loop on each end for a tension spring, or indeed close the ends into a circle for a compression spring? I have tried using the Add command with no satisfactory result.

The alternative (preferred) would be a library of 3D models in a format that can be used in VariCAD.

Any constructive help would be very much appreciated.
Helix spring
Hi:
I also worked a lot with both compression springs and tension springs and have figured out the following.
1. Create a helix,
2. At and helix end start the command Wires,
3. Continue until desired loop is reached,
4. Align the plane of the wire with the plane of the helix end with Z-axis to normal, for example,
5. Add solid.

However, you may always find an element in STEP format on the links:
https://grabcad.com/
http://www.tracepartsonline.net

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