Cleanup Geometry: Delete Duplicate and Find Overlapping

In this video we’ll show you how to delete duplicates and find overlap, solving two main issues you may run into when chaining. For Mastercam 2017 and up.

When creating toolpaths, it can be difficult to chain the correct geometry if there is overlapping and duplicated geometry present. One may also notice overlapping and duplicated geometry when attempting to modify a drawing.

Mastercam can help find these entities and delete them. This will make toolpathing and modifying drawings easier.

Delete Duplicates

HOME > Duplicates

The items deleted will be stated.

The geometry that was duplicated will change color to indicate where the duplicate geometry was present

To reset the geometry color, right click and select Clear Colors.

Find Overlapping

Press Alt + C or select puzzle icon from HOME tab.

This should default to C:\Program Files\Mcam(version)\chooks

Select FindOverlap.dll.

Create a window that encases all entities to be checked.

Press [Enter] or select


The number of overlapping entities deleted will be stated.