Use this procedure to add a tread to a winder turn. 
The winders within the turn zone are set to an angle converging on the Turn Center grip. 
- Select a 1/2 turn or 1/4 turn stair. 
 
- If the Winder Style is balanced, select the circular Edit Turns trigger grip. The Select Winder Style dialog box is displayed. 
Note: Only the winder styles present in the drawing are displayed. 
 
Select Winder Style dialog box
 
  
- Select a Single Point style from the list, and click OK. 
Note: To select the style from the Properties palette, click the Design tab, expand Basic, expand General, and select Single Point for Winder Style. 
  
- Select the Edit Turns trigger grip. 
 
- Select the Add Tread to Turn grip. 
A tread is added to the winder turn. If you continue to add treads, the stair will eventually display a solution tip icon. Use the Undo command to restore the previous tread configuration. 
 
Adding a tread to a winder turn 
 
 Note: To have the converging point on the edge of the stair, you must clear the Use Riser Lines setting. 
  
- When you have finished adding treads, you can click the Exit Edit Turns grip to return to the default stair edit mode, or right-click and click Deselect All to turn off grips.