I’m having a problem offsetting a joined surfaces.
First image shows the two separated surfaces (red and green)
Second images shows the two surfaces joined.
Third shows the end result. I have matched branches. As you can see offset is not only not doing its jobs, but it has created a new surface/cap.
Fourth has the different branches but is offsetting both surfaces by them selves.
This is not the first time I come across this issue with Offset. I have flattened but still this does not work.
Does anyone have an idea as why is this happening? Should I check surfaces normals?