Pipe Seam Issue Not Allowing Split

[darren3 (Darren)]

I am using pipe command to make a groove on a surface. The first 2 split without issue, but this last one will not split. It says it does not intersect.

In this screen shot I highlighted a curve created by Curve Between 2 sets command. It is clear that Rhino doesn’t think there is an intersection along one side of the pipe.

I try to use “SRFseam”, but I cannot select the seam. I can’t find any seams in my drawing that I can select or modify with SRFseam.

Any ideas?

I guess I can split the pipe down the middle, and mirror the side without a seam to the other seam? I really shouldn’t have to invent weird techniques to make a simple split!

[darren3 (Darren)]

Ok, that worked. Splitting the pipe and mirroring it to eliminate the problem seam, that is. I thought of it while I was typing before.

[Helvetosaur]

@darren3

I try to use “SRFseam”, but I cannot select the seam. I can’t find any seams in my drawing that I can select or modify with SRFseam.

If the pipe is closed (has end caps), it is a polysurface, you can’t move the seam in a polysurface. You can explode it, delete the ends, move the seam on the pipe surface and then Cap to remake the end caps.

[darren3 (Darren)]

Oh, that makes sense. I’ll try that next time.