Creating helix-spirals

Command

Path

Create Helix-Spiral

Model > 3D Power Pack

The Create Helix-Spiral command creates a helix-shaped or spiral-shaped 3D object from one or more path objects. The paths can be 2D objects or NURBS curves.

To create a helix or spiral:

Select the object to use as the path.

Select the command.

The Helix-Spiral Creation dialog box opens; specify the object parameters.

Click to show/hide the parameters.Click to show/hide the parameters.

Parameter

Description

Use Turns

Creates a helix/spiral by a specified number of turns along the path

Turns

Enter the total number of turns to be created along the path

Use Pitch

Creates a helix/spiral by pitch

Pitch

Enter the pitch value (the distance between successive turns)

Start Radius

Enter the radius of the perpendicular starting circle

End Radius

Enter the radius of the perpendicular ending circle. To create a helix, enter a value matching the start radius. To create a spiral, enter a different value.

Start Angle

Enter the starting point of the twist on the starting circle

Reverse Direction

Changes the rotation direction of the helix/spiral from clockwise to counter-clockwise or vice versa

Flatten

Flattens the helix/spiral into a 2D spiral. Use Pitch is not available with this option.

spiral_flatten.png 

A helix or spiral is created.

Shapes301587.png 

A helix or spiral object can be used, without further conversion, as a path object for the Extrude Along Path command.

Ungrouping a helix-spiral object results in a NURBS curve.

 

 

Was this page helpful?