cruise ship hulk

 From:  Michael Gibson
6054.24 In reply to 6054.23 
Hi Mike, you can get weird looking "leaky trims" like that if the trimming boundaries have little self-intersecting loops in them.

It would help to see what's going on in your particular case if you could post a 3DM model file with the particular surface and cutting curve that is causing you problems with trim, it's much easier to give feedback about a problem when being able to look at the actual geometry instead of only a screenshot.

Is it possible that the cutting curve is not entirely on the surface? If it's some kidn of warped 3D curve that is not actually on the surface that can make for some difficulties with Trim. It's usually best to trim with a 2D profile curve instead of a warped 3D one. Trim will automatically project 2D cutting curve so you don't need to do any separate step of trying to get the trim curves to follow the surface manually if that's what you've been trying to do.

But again if you can post a 3DM model file that makes it a lot easier to see what in particular is going on, there are potentially many different kinds of things that can be problematic, like if you had any little loops or overshoots in the trim curves or if they were not actually closed curves that could cause generally similar looking problems.

- Michael