Copy Along Vectors
This tool automatically creates repeating patterns of objects by placing copies of them along the length of one or more selected vectors. The tool allows any existing object to be used but it also has an option specifically for the creation of circles, which is a common design element for patterns of this sort.
Watch this video to see this in action:
Copy Object
Any shape vector or group of vectors can be copied along a curve or curves. The first vector or group of vectors selected is the object that gets copied multiple times along the curves.
Distance between copies
This is the distance along the selected curve between each pasted vector. The Force even spacing option ensures that objects are pasted at the end points on the curve(s). If this option is not selected the pasted objects will be placed at the specified distance and may not match the exact length of the curve.
Number of copies
Selecting a specific number of copies automatically sets the specified number of copies along the entire length with an even spacing between them
Align Objects to curve
With this option selected the pasted objects are automatically aligned 'normal' or perpendicular to the curve they are being copied onto. If this is not selected, the copied objects stay in the orientation of the original.
Create Copies on new layer
This option creates the multiple copies on a new layer making it much easier to select and organize the resulting vectors for machining purposes etc.