Tools on the surface


I have a rhino object ( solid sphere). I want to make a few cylinders projecting from its surface towards the outside of the sphere at certain locations. How can I do this in my rhino version 6?


Try OrientOnSrf.
The Help file article has the details.

Thank you very much.

There are several other ways too. That just came to mind.
You will want to add a point on the centerline axis of the cylinder up a little way from the center of the bottom end. This point will be your point to orient on the surface. It needs to be up the axis a little because the surface of the sphere will pull away from the center of the base. You will want the edge of the cylinder to be inside the sphere so you can Boolean them.