Extend part of edge

In Rhino 8 there is a fantastic tool named push/pull. This can even extrude a part of a surface by put a curve on a surface. What should be more great is if this also works on a edge. So, workflow could be, same surface, same curve on surface. But now it pulls the part of the edge like it do on the surface with push/pull.

Correct me if this already excist and I haven’t found it yet.

Hi Patrick,

You can acheive something similar by 2 ways.

First by select the edge througth ‘sub-object’ (ctrl-shift-clic) and move it as you want. It works with vertex too.

Second way, with ‘ReplaceEdge’ command, by split the edge and use a polyline as reference for the new position. A limitation is that the surface needs to be extended to cover the polyline.

I’m not sur if it’s what you aim for but I guess we are close.

Best.

Thank you for taking the time. This works, but the same with the old method of extruding a surface and the new push/pull command this works better if I just can make a line on the surface and pull that edge part. This is more a suggestion for Rhino 9…

Probably I didn’t get it… but I’ll try

If that’s not what you are asking, please attach an example..

This is what I mean. The first is a surface with a curve on a certain place. If I want to extrude the surface, now with push/pull it’s easy (read, less commands) The third is with a second red surface. Now this red surface should be extended like the way push/pull working now. If there is a line, you can extend that part of the surface. If there is not in this version of Rhino, my suggestion is to add it in the next version.

Ah Ok, I see, yes you’re correct.

Push pull should work also on flat surfaces; at the moment every solution I tried give a separate surface that you have to manually merge to the master one.

Splitting the edge, subselecting and extruding with gumball gives a separate surface too (if the surface is planar and the edge extrusion is coplanar, would be easy to merge toghether)