Back Split.3dm (1.1 MB)
When boolean doesn’t work there is usually a good reason, so use split instead - apart from observations above, if you wish to use the surfs in their current state:
Extract and hide parts of gold poly (see images);
Then split green with gold;
Extract and delete split parts (grey);
Then split gold with remaining green and extract and delete gold parts.
The result will join back up into a closed poly, but there are a couple of naked edges at surfaces which after splitting, end in fine points - probably why the boolean was having a hard time…
