Offset Grasshopper

Grasshopper
,
1

Hello everyone,

I’m having a problem offsetting a joined surfaces.
First image shows the two separated surfaces (red and green)

Offset 1
Offset 11920×564 86.1 KB

Second images shows the two surfaces joined.

Offset 2
Offset 21920×564 84.9 KB

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.

Offset 3
Offset 31920×564 81.8 KB

Fourth has the different branches but is offsetting both surfaces by them selves.

Offset 4
Offset 41920×564 85.5 KB

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?

Thanks.

2

If you want help, better post your Grasshopper file with the relevant geometry internalised.

3

Yes sir, I missed that part. Here it goes
offset problem 04-12-2022.gh (22.5 KB)

Thanks