About Modifying Helixes

You can use grips or the Properties palette to modify the shape and size of a helix.

You can use the grips on a helix to change the following properties:

Start point
Base radius
Top radius
Height
Location

When you use a grip to change the base radius of a helix, the top radius scales to maintain the current ratio. Use the Properties palette to change the base radius independent of the top radius.

You can use the Properties palette to change other helix properties, such as

Number of turns (Turns)
Turn height
Direction of the twist — clockwise (CW) or counterclockwise (CCW)