Hello dear users,

I have a problem, I wish to made this tutorial complete, but I have a problem, I have a not trimable Fragment,
what should I do? I have even rotate the cutet object, but nothing result.

Hi Lordfox, can you please post the 3DM model file with the surface you're having trouble trimming? It's difficult to help just based on a screenshot, with a 3DM model file I'll have a much better chance of examining things and seeing what might be going on.

But one thing to watch out for is that if your surface has any "self intersections" in it where it might be bunched up awkwardly in such a way that it folds back over itself in a small area, that can get in the way of being able to intersect it.

- Michael

I'm was working this tutorial:

http://moi3d.com/forum/lmessages.php?webtag=MOI&msg=5470.1

Ok, I posted the *.3dm in my first post to.

Thank you for helping ...

only the trime-line and trimed Objects I didn't have save, but the file is the step, before I do trim it.

Hi Lordfox, probably your surface here is just a bit too highly contorted for it to be cleanly intersected. You'll probably need to tone down the twisting action on it a bit before you'd be able to cut it.

Some areas of the surface have little awkward ripples and dents in it, it's probably got the kind of self-overlap that I was talking about previously. Here's an example of a problematic spot:






It's basically a fairly severe torture test for the intersector to deal with a hugely complex surface with unusually high control point count and little tiny super high frequency bumpy shape, it will probably hit some limits in intersection curve complexity when you try to intersect it.

If you had it not quite twisted so severely it would probably have a better shot.

- Michael

thank you so much, yes I know .. I did do some other settings like in the tutorial, I will try now lower twist angels ;)

thank you, for your help