Spiral (Helix) Spiral (Helix)The Spiral function creates a spiral or a helix based on the settings that you define in the Data Entry tab.
Spiral supports the use of the snap increment when using the Pick method to set the origin location. The snap increment allows you to get precise results when using mouse selection and helps to reduce data entry modifications.
To learn more, view Snap Increment.
Start Radius - sets the radius at the beginning of the spiral. For a helix this is the top radius.
End Radius - sets the radius at the end of the spiral. For a helix this is the bottom radius.
Z Depth - sets the height of the helix (3D spiral) measured along the Z-axis, Click Z Depth to enable the Number of Turns.
Pitch - sets the pitch used with the Z Depth option. This is the difference in the Z-axis from one curve to the next.
Number of Turns - sets the number of turns used to create a 2D spiral.
Ending Pitch - sets the final pitch of the Helix when using the Z Depth option. Click Ending Pitch, and type a value in the box. The pitch varies gradually along the spiral from the Pitch value to the Ending Pitch value.
Accuracy - defines the accuracy of the spiral, higher values result in longer segments, and smaller values create smaller (more accurate) entities.
Output
Lines - creates the spiral using line segments only.
Arcs - creates the spiral using arc segments only.
Orientation
CCW - the spiral is created in a counter-clockwise direction.
CW - the spiral is created in a clockwise direction.
Origin