Sketchup Plugin for Unfolding or Flattening Models - Works in Sketchup 2016
Original source and author of this plugin is at http://www.pumpkinpirate.info/flattery/. But the version up there does not work with latest version of sketchup. I could not contact the original author regarding the fixes or updates to this plugin, so I went ahead made the fixes myself and put it here for anyone still interested.
I have tested this on a Windows machine with Sketchup 2016 and it appears to be working fine. I make no gurantee/warantee on its correctness, use at your own risk.
Installation To install Flattery, copy the file "flattery.rb" and the folder "flattery" into the SketchUp plugins folder. On Windows, this folder is at
C:\Users\your user name\AppData\Roaming\SketchUp\SketchUp 2016\SketchUp\Plugins
Restart Sketchup and enable the Flattery by going to "Window -> Preference -> Extensions" and check the flattery plugin. You should see the flattery toolbar on the sketup now.
More Info For additional info/help please visit the original website or sketchup plugin page, both of which are listed below