Two very basic question

hi
I'm a new user of autocad. and I will use it only to design very simple
mechanical drawings

so my questions is better illustrated iwth a simple example
I create a square of 10 inches edge. I draw two circlels in it.

now I extrude the square to a cube (10x10x10). then I want to have the
circles to become holes one starting from the bottom surface and
entering the cube for 1 inch. and the other hole starting from the top
surface and entering for exmaple 2 inches into the cube.

My problem is that all the elements are on the bottom surface and when
I extrude I always extrude starting from the bottom. is there a way to
have one element positioned on the top and extrude from there negative?
I would like to find a way to make this more convenient than moving the
object physically with the mouse.

hope I was clear enough
claudio

 

Change the Elevation property for the circle that will become the upper
cylinder. You can also draw objects at any elevation you desire by simply
setting the default Elevation before creating them. You can find lots of
good information in HELP by pressing F1 and doing a bit of searching.
___

 

thanks the elev is very helpful and immediately helped me out for the
problem
now other question related
I made different objects at different elevations.
let say now I changed my mind regardign an object. is it possible to
change its value of elevation to another one with a command?
thanks
-Claudio

 

Yes, with the CHANGE command. Or with the PROPERTIES dialog.
___

 

What about MOVE?

 

Oh boy. The general advisory attitude of the group is appreciated but using
the F1 button should be more strongly suggested. Like during the former
Chinese cultural revolution every unliterated peasant was entitled to attend
any university faculty for education (high school studies beginning with
primary school mathemathics like (1+1=2)).

Sorry for my bad english

 

Draw the second circle on the top surface, set the UCS accordingly and
extrude down. Learn about UCS it is very important in solid modelling and 3D
surfaces.

--

uNkulunkulu
uMvelinqangi
Mina bona wena
mina bona lo mombi yena lo shatini
Skat lo Boss yena fika, nika yena iwhisky