I’m very new to Rhino 3D and have a hopefully simple question. I created a circle and extruded it to create a cylinder. Is there a way to edit the radius/diameter of the cylinder other than Scale2-D? This command works but requires that I enter a scaling factor when what I would prefer is to enter the new radius/diameter directly. In other works, if I want to change a cylinder with a diameter of 1.5" to one with a diameter of 1" the Scale2-D command requires that I enter a scaling factor of 0.666 which is not quite as exact as simply entering the new diameter of 1".
The number I type is not being read as the new desired radius value but rather the scaling factor. Actually, entering a value of 1—which should result in no scaling at all—changes the diameter of the cylinder from 1.5" to 2.0". Very strange.
One thing to keep in mind with Rhino is the command used to create an object, has nothing to do with editing it later.
To use your example, you drew a circle using it’s diameter option. The resulting circle is no different than one you used the Radius on, or any of the other options.
No parameter value or vestige of using the diameter option is saved with the circle.
Sorry to hijack this thread but I noticed when you went into the Scale command your typed “cen” as your origin. Does typing other OSnaps work and does it work on other commands? I never knew about that trick
Hi Andrew - yes you can always type an OSnap as needed - it lasts for one pick and overrides any set persistent snaps. I did it that way, I think, because my mixed monitors (one high res one normal) makes it hard to get Rhino looking correct on my standard 1024 by 768 capture size, and the Osnap toolbar was way out of proportion and useless…
Cen End Mid Near Knot Perp Tan Quad Point Vertex Int OnSrf OnCrv etc etc.