Rhino just told me:
“One input was not extruded because it would have made an invalid surface.”
I’m trying to extrude a close-loop edge, in the specified direction of those two points:
Rhino should never tell me No. What is an invalid surface anyway? The operation seems to work and when I finish it all vanishes, but here’s the preview.
BTW, I was able top duplicate the edge, and find that’s technically an open curve (even if the pipe I had there has no open edges on the seam). I had to pick on of the end points move it away, and snap it back to the start point. Then once it was a closed curved the extrusion work. Are you guys happy now? I’m not, I didn’t need to have valid geometry. This was just to make a sketch, so please stop trying to help me by not serving me invalid surfaces, not cool.