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Pyramid rotation


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Posted

I need to draw hexagonal pyramid like this in AutoCAD. So i used Pyramid command where I got hexagon as top view and a triangular shape at the front view at first. Now I need to turn the first front view as shown in the figure (attached). When I used rotate command, the tracking lines showing angles is not coming. here there is no angle specified. we need to turn it manually so that the o'd' line should be horizontal in the second front view. help me drawing like this in AutoCAD. What i mean is, while in rotate3D command, i selected the object, then VIEW, then specified the base point, then its asking for angle. here angle is not specified. we need to rotate the first front view such that the line O'D' becomes horizontal. any way of doing it. please help. The angle tracking lines are not coming as we rotate. Polar tracking is ON. please help. I need to rotate first front view like the one as in second front view in image shown. Thank you

Pyramid.jpg

Posted

Do you need to rotate the pyramid itself, or just the view of it? You can draw it once in model space, then create multiple viewports in paper space to get the diagram you attached. No need to rotate the original pyramid.

Posted

Sometimes I find it much easier to use the ALIGN command instead of rotate or rotate3d.  In this case just use d' and o' as the source points and points on the  x axis for the two target points.  The distance from the d' target point to the o' target point is not critical just don't scale the result when prompted.

Posted

I'm no 3D expert, but should the OP be using the 2D Rotate if all they are doing is copying the Pyramid onto its side?

Posted

Yes you can use the plain ROTATE commad uing the reference option.

 

For example,

Command: ROTATE
Current positive angle in UCS:  ANGDIR=counterclockwise  ANGBASE=0
Select objects: 1 found
Select objects:  pick object then enter
Specify base point:  vertex 1
Specify rotation angle or [Copy/Reference] <0>: r
Specify the reference angle <0>:     vertex 1 again  Specify second point: vertex 2
Specify the new angle or [Points] <0>: vertex 3 

image.png.9432956dd192dee3d41a2dc4378177f6.png

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