The offset of a line is not a line, but a more complicated object, which has (I guess) the same geometry. I wish it was just plain line. Why?
Well, when I ask RhinoCam to engrave along a real line, it programs the tool just to move from one end to the other. When I ask RhinoCam to engrave along the offset thing which is not really a line, then RhinoCam inserts a point halfway along. And THEN the controller on my CNC router screws up.
Yes, it SHOULD all work, but it doesn’t. The real fault is in the CNC controller … and I’m trying to get their attention. But it would be nice if Rhino special-cased Offset to offset a line to a line. And maybe a circle to a circle too …
Oh: this is an old version of Rhino … 4.0. But I’d be surprised if it was different in later versions …