Hi Michael.

Ok. Understood.

@You : "...If you have a curvy surface instead of a flat surface..."
But...the problem is that I never have Non-flat surface.
The surface that I use with as the target for "Project" is always flat, but there are some situation where it fails anyway.

Strange thing...

You can watch again my previous post and the video posted at (http://moi3d.com/forum/index.php?webtag=MOI&msg=8646.7)

This is the video : http://take.ms/AF6Rq

As you can see at position 01:58 I use the Circle as reference to find holes in it.
The circle if is simply rotated but is FLAT.
And as you can see the blue curve is not considered "hole". Is not "captured" by the "Project" command.


I stay tuned.

Thanks.