For instance, if I have a circle and I want to make 1/16" breaks in the line in 3 or 4 places along the circle, how can I do this? I have tried the eraser tool, but it closes the line up around where I erased.
One way: Create small lines where you want the circle to break, then use the Virtual Segment Delete tool (Crop tool flyout) to remove the unwanted parts between the lines.
Break a circle.cdr