how to draw a semi sphere?

[ReMark]

Revolved a plain old single line arc in my test. When I helped someone yesterday with a similar question (re: dome) I revolved a closed polyline profile thus ending up with a solid as one would expect.

[JD Mather]

It might be the difference between the two releases, but in JD's example a surface was created, he forgot to mention that during the revolve command there is a MOde option to choose between surface and solid.

 

Revolve of an open arc will result in surface body. Since 2007.

See the 2007 tutorials in my signature.

[Nishant Agarwal]

Might be an issue with the edition of autocad. I am stuck in 2008, and when i use the revolve command on my arc, it gives me a solid, not a surface.

 

Seems that i figured this out

the problem was that

it is by default in solid mode

 

so here are the steps

> do not select the object...any object

> initiate revolve command

> then look at command line it says for SOLID or SURFACE

> select surface SU

> now a surface will be created

> and then soild by thicken command

 

thanks to all!!

[rkent]

Revolve of an open arc will result in surface body. Since 2007.

See the 2007 tutorials in my signature.

 

Not if MOde is set to solid, in 2012 at least.

[JD Mather]

Not if MOde is set to solid, in 2012 at least.

 

Yes, I see that now. Kind of interesting that it automatically closes the loop, I exected the behavior to automatically change to SU if profile was open.

I don't use AutoCAD much anymore. As Noted Shell will work with the solid hemisphere or change to surface output and thicken.

 

Never would have figured this end in a 3-page thread.

[pluissand]

In AutoCAD at the command line:

1-_sphere (press enter)

2-Specify center point or [3P/2P/Ttr]: 0,0,0 [the key to success in seconds] then press enter

3-Specify radius or [Diameter]: 100

4-_slice (press enter)

5-Select objects to slice: [You must select the sphere then you can read the AutoCAD message] :1 found (press enter)

6-Specify start point of slicing plane or [planar

Object/Surface/Zaxis/View/XY/YZ/ZX/3points] : xy (near to the end....!!!)

7-Specify a point on the XY-plane :The sphere's center (please press Enter).

8-Specify a point on desired side or [keep Both sides] : (here press Enter, AutoCAD divide the sphere in two equal parts by the middle, to save time you keep with them).

9-Erase (you can erase later one of the sphere side if you want it)