Hi there,

I'm trying to copy a surface that is Irregular, then I need to offset the copied surface just a little bit to the inside of the surface, to create a little bit smaller surface. I exploded the surface edges, then I tried to offset them, however, because the shape is irregular I wasn't able to get clean interesting edges to create a surface from. I also tried scaling the surface down, but again it didn't work because the shape isn't a regular one. any ideas . I attached the Rhino and Grasshopper file. 

Thanks in advance.