CAMduct: Failed Oversized Radius Offset

TL;DR

Oversized part is too narrow. This would cause some oversized part lost.

In this case, 6-2/8 is lost.

When Automatic Nesting, error would be raised:

See? The shape of the missing 6-2/8 is so strange.

If you hit Apply, error would be raised:

Solution

Avoid thin and sharp part is generated by Oversized Parts.