From FreeCAD Documentation
- The views have taken the color and transparency values from their original parts, but you can change that in the properties of each individual view if you wish.
- We are now ready to produce our first Povray render. Press the Render button.
- Note for windows users: when receiving (in Povray) a warning saying "I/O restrictions prohibit write access ..."
- open Povray
- choose "Options > Script I/O Restrictions" and make sure it is set to "No Restrictions"
- retry render
- You will be asked to give a file name and path for the .png image that will be saved by Povray.
- Povray will then open and calculate the image.
- When this is done, click the image to close the Povray window. The resulting image will be loaded in FreeCAD: