@fv,
Sorry that you've experienced some frustration with locating the appropriate help content for this option. We do try our best to keep the help documentation updated with every release, but I agree "Allowable Rotations" is one of the topics where we can certainly add more clarity and some reference examples.
Here's a link that you might find useful for this topic: https://help.autodesk.com/view/TNNUINV/ENU/?query=rotation
Additionally, please note that there are two different levels where allowable rotations can be specified:
- Material (found under Nesting tab in Process Material Library dialog)
- Shapes (found under Source Nesting Properties dialog)
The material rotation settings always prevail over that of the part. See examples below:
1. If Material rotations are set to 90,180,270 (all checked), Shape rotations for 90, 180, 270 can be checked OR unchecked individually and it will apply corresponding settings for each of the shapes.
2. If Material rotations are set to 180, Shapes can either be rotated 180 OR not rotate at all. Checking 90 and 270 in this scenario still wont allow those rotations as the material restricts it to 0 and 180 ONLY.
3. If Material allows no rotation (90, 180, 270 are all unchecked), Shapes can not be rotated at all irrespective of what Shape rotation options are checked.
Hope this helps. Let us know if you have additional questions or are still running into rotation issues. Thanks,
Ravi Javia
Product Manager