I need to mirror a surface to get it symmetric.
To do this, I have made the surface a little larger than it needs to be to have something to trim from.
My problem is that I can’t get Rhino to split, trim or anything else on this surface (made with patch, from outline curves).
I have also tried to matchsrf, without trimming the surface down the middle plane. This dosn’t work either.
Hello - I can’t see why mirror would not work if the edge is on the mirror place - is that it does not work or that it is not smooth across the mirror plane when it does? Can you post a file?
because the patch is trimmed to your input curves, and later, splitted. it doesn’t have any “untrimmed” edges. I would suggest using other methods than patch but I don’t know the context.