08-31-2018, 04:53 PM
A fast look at the mesh - when creating regions for cut - it's possible to see some bad topology.
![[Image: wrong_topology.png]](https://s25.postimg.cc/cnhpa17fz/wrong_topology.png)
I selected visually the faces of the screw head and after select the edge loop I just found there were unpredictable face selected since I got more than a "circle" selected.
That's something that can makes Wings3D crazy. It looks like you has been using some boolean tool to create that object. They use to do that.
![[Image: wrong_topology.png]](https://s25.postimg.cc/cnhpa17fz/wrong_topology.png)
I selected visually the faces of the screw head and after select the edge loop I just found there were unpredictable face selected since I got more than a "circle" selected.
That's something that can makes Wings3D crazy. It looks like you has been using some boolean tool to create that object. They use to do that.