Arbortext IsoDraw > User's Reference > Palette Window Toolbox > Elements > Inner Thread > Generation
  
Generation
To draw an inner thread, select one of the two Inner thread tools, or , from the toolbox. The cursor becomes a drawing cursor.
An inner thread is drawn in the same way as an ellipse. The direction in which you drag the ellipse when generating it determines the orientation angle and thus the direction of the thread turns.
A newly generated inner thread is always filled completely with thread turns. The spacing between the turns is assigned automatically. (See the thread specifications under in Preferences.)
The depth and spacing of the thread turns can be changed subsequently.