To Create a Twisted Segment
1. Click Model > Shapes > Twist. The Twist tab opens.
2. Select an attachment edge. The selected edge is displayed in the Placement collector.
3. Select a method from the Width Method options and follow the steps below for the selected option.
Offset—Calculates the segment width using offset dimensions from the attachment edge.
1. Select a Start Width option for the attachment edge:
To End—Sets the segment end at the chain end.
Blind—Trims or extends the segment end from the chain end by the value specified. Type a value in the box or drag the handle in the graphics window.
Symmetrical—Calculates and centers segment width from the twist axis by the specified dimension.
1. To change the start width, type a value in the Start Width box.
2. To locate the twist axis on a datum point, click Set Twist Axis and select a datum point on the attachment edge . This is the centerline of the twist segment. It is perpendicular to the start edge and coplanar with the existing segment.
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When you twist the material into a spiral, keep in mind that the segment will fail if the material bends through itself.
4. To modify segment width, click Modify Width and type a new value in the box or use the drag handles in the graphics window.
5. Use the Wall Dimensions options to change the segment length and twist angle.
Wall length—Type a number in the box, select from a list of previously used values, or drag the handle in the graphics window. When you drag the handle, the value in the box updates dynamically.
Twist angle—Select an angle from the list, type an angle value in the box, or drag the handle in the graphics window. When you drag the handle, the value in the box updates dynamically.
6. To change the segment length in the unbent state, perform the following steps:
a. Click Bend Allowance. The Bend Allowance tab opens.
b. Choose a value form the list or type a new value for the Wall length in an unbent state in the box.
7. Click .