How to Make a Helix or Spiral in SOLIDWORKS

The Helix/Spiral command creates a helical curve from a circle or a spiral from a sketch. It is commonly used as the path for springs, threads, coils, hoses, decorative grooves, and sweep features that need a controlled twist.

Create the base circle

Start a sketch on the plane where the helix should begin. Draw a circle with the diameter you want for the helix. This circle defines the helix diameter, so fully define it before leaving the sketch.

Exit the sketch, then go to Insert > Curve > Helix/Spiral. SOLIDWORKS opens the Helix/Spiral PropertyManager and previews the curve from the selected circle.

Choose the helix definition

SOLIDWORKS can define a helix using combinations such as pitch and revolution, height and revolution, or height and pitch. Pick the option that matches the design requirement. For a spring, pitch and number of revolutions are often easiest. For a threaded or coiled part with a fixed length, height and pitch may be clearer.

Set the direction, start angle, and clockwise or counterclockwise rotation. Use the preview to confirm that the helix grows in the correct direction before accepting the feature.

Use the helix for a sweep

Most helix features become paths for a swept boss, swept cut, or swept surface. Create a profile sketch normal to the start of the helix, such as a small circle for a wire or a thread profile for a cut. Then use Swept Boss/Base or Swept Cut and select the helix as the path.

Keep the profile small enough that it does not intersect itself along the helix. If the sweep fails, reduce the profile size, increase the pitch, or check whether the profile is positioned correctly at the start of the path.

Create a spiral instead

To create a flat spiral, use the spiral option in the same command. A spiral is useful for scroll shapes, flat coils, and guide curves that expand outward on one plane. Review the start and end radius so the spiral fits inside the available space.

Troubleshooting

If the command will not start, confirm that the sketch contains a valid circle or supported spiral reference. If the preview points the wrong way, reverse the direction in the PropertyManager instead of rebuilding the sketch.

For precise parts, document the pitch, height, revolutions, and handedness. Those values matter when the helix represents a spring, thread, auger, or manufactured coil.