hi there. i've got a very simple question; re: NURBS extrude/curve creating; apologies in advance.
i was wondering if it was possible to create a curve along the edge of my model? I realise I can draw my curve freehand, but this isn't exact, and I'd like to create the curve so I can then extrude it... so it needs to be exact.
or am i going about this the wrong way? do i need to create a curve on the edge of my model, or can i just select the edge line and extrude this?
If your model is made of NURBS, then the 'edge' is itself an isoparm, which can be duplicated (Duplicate Curve On Surface) and extruded.
No matter what your model is made of, you can draw a curve precisely along it by using one of several methods. First, you could turn on snapping while you draw the curve (either to points or to curves, depending on the model). Second, you could make the model live and then draw a curve-on-surface directly on its surface.
You can also duplicate polygon edges in the same manner via the Nurbs option or a better way is to use the Bonus Tools>create curve from edges tool and lastly for accuracy you can project curves built in orthographic space onto existing Nurbs Surfaces.