Solid objects
A solid is a surface or polysurface that encloses a volume. Solids are created anytime a surface or polysurface is completely closed. Rhino creates single-surface solids, polysurface solids, and extrusion solids.
Draw single surface solids
A single surface can wrap around and join itself. Example commands include Sphere, Torus, and Ellipsoid. Control points can be displayed on single-surface solids and moved to change the surface.
Ellipsoid
Draw a solid ellipsoid.
Sphere
Draw a solid sphere.
SphereTangentToThreeSurfaces
Create a spherical surface of a given radius tangent to the three selected surfaces.
Torus
Draw a NURBS torus (donut shape).
Draw polysurface solids
Some Rhino commands create polysurface solids. A polysurface consists of two or more surfaces that are joined together. A polysurface that encloses a volume of space defines a solid. Pyramid, Cone, and Truncated Cone are examples of commands that create polysurface solids.
The SolidPtOn command turns on grip points for polysurfaces, which act like control points.
Box
Draw a solid box.
Cone
Creates a surface cone.
Cylinder
Draw a polysurface cylinder.
Paraboloid
Draw a parabolic surface or capped solid.
Pyramid
Draw a pyramid.
TruncatedCone
Draw a NURBS truncated cone.
TruncatedPyramid
Draw a pyramid whose apex is truncated by a plane.
Tube
Draw a closed cylinder with a concentric cylindrical hole.
Create solid object from curves or surfaces
Boss
Extrude closed planar curves normal to the curve plane toward a boundary surface where the boundary surface is trimmed and joined to the extruded objects.
ExtrudeCrv
Drive closed planar curves in a straight line.
ExtrudeSrf
Drive surface edges in a straight line to create a solid.
Pipe
Create a surface, polysurface, or extrusion object with a circular profile around a curve.
Rib
Extrude a curve in two directions to a boundary surface.
Slab
Offset a polyline, and extrude and cap the result to create a solid.