Hi Michael,

Many thanks for the sharp eye response - zooming into the nano world does indeed highlight the flipped curves.

Is it possible for a script to highlight a cluster of Points based on a set criteria. Like if a curve was selected and the script turned on any points that where within 2mm from each other. This is a common problem when sending files for laser cutting and could be a good tool to detect problems like this. Not sure what would be involved in something like this.

Your A grade service is always appreciated.

regards
Alex.