Boolean union failure

Rhino Rhino for Windows
1

Hi, i am trying to union these two poly surfaces, however rhino will not let me, and says the union has failed. As far as i can see there shouldn’t be any reason why it would fail but am unsure why it will not join.
-Thanks.
UNION.3dm (4.8 MB)

2

There is a simple solution to that issue. Extract the two internal surfaces that touch each other, then use “Join”. :slight_smile:

1 Like
3

Thanks!