Hello everyone.

A noob with a noob question here.

Can someone more experienced with Moi3D please help me out with a suggestion of how I can cut the red surface with the blue surface so I can then join the two surfaces?



I want to do this so as to be able to then join the remaining center part of the red surface to the blue surface. The top edge loop of the blue surface is supposed to be tangent to the red surface. The red surface used to have a hole whose edge exactly matched the blue surface's top edge but I deleted the hole in the red surface thinking I could trim away the excess from it later. However, I do have a save from before that so I can revert if needed.

Would one use trim or boolean difference for something like this? Or something else? I tried both but weird things happen instead of the red surface getting cut.

Here's a link to the model file if needed :

https://drive.google.com/open?id=0BwJaCsyXIqEeMDdhTk95V3JXV0k

Or should I not have deleted the hole in the red surface and used some other approach? As I've been writing this I also tried using both Blend and Nsided to close the hole in the red surface but Blend doesn't seem to do anything and Nsided throws a calculation error no matter how I try and tweak the settings.

If anyone can help me out with some knowhow on fixing this I'd very much appreciate it.

Thank you for your time and consideration.

Larry.