RO command in AutoCAD – Rotate3D – Rotate 3D model around an axis

1. The way to call RO command in AutoCAD

Screen menu	Type command
Modify » Rotate » Rotate 3	Rotate 3D

Rotate3D command rotates 3D object around an axis

Rotate3D

Select objects: Select object to rotate (1)

Select objects:

Specify first point on axis or define axis by [Object/Last/View/Xaxis/Yaxis/Zaxis/ 2points]: Specify the first point A on rotation axis.

Specify second point on axis: Specify the second point A on rotation axis

Specify rotation angle or [Reference]: -120 Enter rotation angle

2. The options with RO command in AutoCAD

Object

Arrange rotation axis following to existing objects on drawing. If you enter the option O (Object), the following prompt line appears:

Select a line, circle, arc or 2D-polyline segment: Select object as straight line, circle, arc or 2D polyline segment.

Line

Select rotation axis as straight line.

RO command in AutoCAD – Rotate3D – Rotate 3D model around an axis

rotate3D

Select objects: Select object to rotate (1).
Select objects: ¿
Specify first point on axis or define axis by [Object/Last/View/Xaxis/Yaxis/Zaxis/ 2points]: O¿

Select a line, circle, arc or 2D-polyline segment: Select straight line as rotation axis (2).
Specify rotation angle or [Reference]: 90 ¿ Enter rotation angle in comparison with the position of selected current object.

Reference

Enter reference rotation angle and new angle.

Specify the reference angle <0>: Enter the start angle as reference angle.
Specify the new angle: Enter new angle as the end angle.
The difference between the start angle and the end angle is calculation of rotation angle.

Circle

Arrange rotation axis so that it is perpendicular with the plane of circle and axis across the center.

Rotate3D

Select objects: Select object to rotate (1).
Select objects:

Specify first point on axis or define axis by [Object/Last/View/Xaxis/Yaxis/Zaxis/ 2points]: O¿

Select a line, circle, arc or 2D-polyline segment: Select the straight line as rotation axis (2).

Specify rotation angle or [Reference]: 70 Enter rotation angle.

RO command in AutoCAD – Rotate3D – Rotate 3D model around an axis

Arc

Arrange rotation axis so that it is perpendicular with the plane of arc and crosses its center.
Specify rotation angle or [Reference]: Enter rotation angle.

2D Polyline Segment

Arrange rotation axis following to polyline segment. Consider straight segment as straight line. Consider arc segment as an arc.

Specify rotation angle or [Reference]: Enter rotation angle or enter R.

Last

Use the last selected rotation axis by rotate3D command. If you enter the option L (Last), the following prompt line appears:

Specify rotation angle or [Reference]: Enter rotation angle.

View

Arrange rotation axis following to view direction of viewport across the selected point (direction is perpendicular with screen across the selected point). If you enter the option V (View), the following prompt line appears:
Specify a point on the view direction axis <0,0,0>: Select A point on the axis of view direction of screen.
Specify rotation angle or [Reference]: 120¿ Enter rotation angle.

RO command in AutoCAD – Rotate3D – Rotate 3D model around an axis

X Axis, Y Axis, Z Axis

Arrange rotation axis following to one of the axis ((X, Y, or Z) across the selected point.

Rotate3D

Select objects: Select object to rotate (1)

Select objects:
Specify first point on axis or define axis by [Object/Last/View/Xaxis/Yaxis/Zaxis/ 2points]: X

Specify a point on the X axis <0,0,0>: Select A point on X rotation axis.
Specify rotation angle or [Reference]: 90 ¿ Enter rotation angle.

a) X rotation axis b) Y rotation axis c) Z rotation axis

Similarly, select rotation axis Y, Z across the selected points.

2 Points

Use 2 points to define rotation axis. It is similar to the original default case.

Good luck!

Thanks for reading!!!

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