Hi David,

> I send you the 3dm file with the hull and with the curve
> that I used for trimming it

It looks like the file has the already-trimmed surface in it though.

Do you have a version with the surface _before_ trimming, so I can repeat the actual trim operation over here with that cutting curve, to see what is happening in it?

I can try to untrim and then retrim the one you sent, but there are also various other cuts on other sides in addition to the trim curve that is in the file.

- Michael