Brep contour

[saeed_hasan_zadeh (saeed)]

Hi all
i have a projected brep , how can i clean inner of it?
i need to remove/merge all the inner part and acquire just the ring shape as a surface or 2 closed curve.

naked123.gh (54.1 KB)

[jessesn (Jessesn Chen)]

@saeed_hasan_zadeh

i need to remove/merge all the inner part and acquire just the ring shape as a surface or 2 closed curve.

Fyi,

RegionDifference.gh (62.7 KB)