Attached is an example of a bad surface intersection result.
Transom object was created in Maxsurf and imported to Rhino. Transom Extension was created in Rhino.
Note that the original Transom surface (also attached) had a single trimming border, which is not desirable. However, even un-trimmed it isn’t working properly.
Surfaces do not intersect.3dm (58.7 KB)
single border surface.3dm (131.2 KB)
Version 5 SR 14
Probably works in WIP but I haven’t had a chance to update recently.