Region difference failing when subtracting one surface from another

Grasshopper
1

Hi Guys,

I am wanting to subtract one surface from another surface. I am attempting to do this using ‘region difference’. It works 90% of the time, but I have this one geometry it fails for. I am wanting to remove the green surface from the red, leaving part of the red surface.

pic1
pic1851×760 34.6 KB

Is it something I am doing wrong, or a bug with the region difference component?

I have attached my GH file showing it working on one geomtery, and then failing on this second geometry.

Thanks in advance.

Region_difference_issue.gh (47.9 KB)

2

Region_difference__2020May13a
Region_difference__2020May13a1087×406 62.9 KB

Region_difference__2020May13a.gh (53.7 KB)

3

A quick fix! thanks very much