When you click on the Extend Scanlines button
, CopyCAD displays the Extend Scanlines dialog box.
You can use this dialog box to select how you want to extend the scanlines in the selected model, either horizontally, vertically or tangentially.
For example, extending scanlines tangentially converts this:

Into this:

You can extend the scanlines either by specified length or to a bounding box.
Click on the links below to find out more about that area of the dialog box.