offset path feature won't become a sharp
Why if I have a curve that has several very small (sharp) angles, when I enter it in the offset path feature (+ offset), then the offset result can't be sharp anyway. but if (-) is offset, then can it turn sharp?
To fix that, you have to increase the Miter limit value in this dialog. Read more about Miter limits here:
The article is about strokes, but the same principle applies to offsets.