The Tube command draws a closed cylinder with a concentric cylindrical hole.
Steps
Pick the center and radius of the base. See the Circle command for option descriptions.
After drawing the base circle, pick the radius/diameter for the second tube wall.
Pick the end of the tube or type a height.
Command-line options
-Direction constraint options: Direction constraints restrict the direction of the circle.
Nonce: The center can be anywhere in 3-D space.
Pick the second point anywhere using elevator mode, object snaps or other modeling aids.
Vertical: Draws an object perpendicular to the construction plane.
Pick the center and a radius or diameter.
AroundCurve: Draws a circle perpendicular to a curve.
Select a curve and pick the center of the circle on the curve and a radius or diameter.
-BothSides: Draws the object on both sides of the start point, creating the object twice as long as you indicate.
-WallThickness: Specifies the value for the distance between the inside and outside of the tube.
For more information, please refer to the Rhino documentation.
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