Set Ring Cut
It is used to overcut the acute angle and loop around, so as to avoid over burn.
Before setting ring cut, set unfill / fill according to the actual situation.
To set ring cut, select the target object, and do the following:
In the menu bar, click Technics → Ring Cut. Ring Cut dialog box pops up.
Set parameter Angle to 0°~90° and parameter Length to 0.1mm~100mm.
The result is as follows: