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3d cad...help???

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katycad1

Mechanical
Nov 19, 2004
3
I want to know how to add a 3D wall.
 
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Using solids, draw the elevation view (rectangle) and then use the extrude command to extrude it the desired height.

Using lines, just add the "Z" dimension. For example:

Line -> 0,0,0 -> @0,0,6

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Bring back the HP-15
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katycad1,
I'm confused, too!!! [sadeyes]

I don't find any netiquette/rules for Eng-tips, but anyway. You are stingy with Your informations!! [sadeyes]

Which AC-version are You running? Any applications?
Naked Acad don't know any objects called "wall".
Take Beggar's solid, ore use "_box", or draw a polyline and extrude it......

waiting for better times, Lothar

ADT 2004
ACAD 2002
 
Well I am using the AutoCad 2005 full version. I have used the AutoCad program before, but I cant remember which version I used. Anyways with the other program I was able to build Walls right over my floor plans. There was a tool that would allow me to just select the height of the walls that I wanted and allow me to just Draw the wall. If there is a way without having to exturde the box I would apprcreate the help.
 
Here is what you do:

Draw a rectangle that defines the section of the wall (like a wall from 2.5meters high, 25cm thick and 10 meters length):
command:rec **hit enter**
specifi basepoint: **specifi the basepoint of the wall, can be the end of a line, center of a circle or other snaps (shift+right mouse button)**
specifi next point:mad:10,0.25 **hit enter** (now your rectangle has next dimensions: 10meters in X direction and 0.25meters in Y direction)
command:ext (extrude, giving a hight to the rectangle)
select objects: **select the rectangle**
specifi hight:2.5
spicifi taper angle<0.0000>: **hit enter**

done, now your wall is readdy.
 
First-
The information in the first reply was very complete, even if a bit cryptic. Good post though. All of the posts were accurate and useful.

Now to help katycad1-

There are 2 primary ways to get there. BOTH are equally valid, but yield slightly different down-stream useability.

First-
The approach of creating a rectangle and extruding it to the wall height is a good one. It's probably prefered, so I'll briefly mention the other one first.

The method used in your previous workings with ACAD took a single line already in your drawing as a representation of the wall (interior or exterior, or both...) and applied a factor to it we call "thickness", which pushed that line "upward" along "Z". As you may know, every line "entity" in ACAD has a "thickness" of zero. You click on the line and "change" its thickness "property" to the height you want. This will literally create a "surface" in the "Z" direction that will "hide", just like you'd want a wall to! That's REALLY all there is to it.
Advantages-
1. extreemely simple
2. extreemely useful & useable
3. very very "lighweight" in terms of system resources.
4. This approach has been around since early ACAD (r-9 or 10?).
As you can see, a very useful option if all you are wanting to do is create highly viewable 3D renderings of your office space layouts, etc.

* Just isolate the layer(s) with your walls, run the "change" command, and window-select all wall lines you want to raise, select the properties option, and apply the value you want for thickness. Alternatively, use the object properties dialog box. Find and change the thickness setting. Very useful.

Disadvantage-
1. Will not work with "soldraw" command(s) to express linework for projected drawing views. The projected surfaces don't "create" the linework you'd need if you are projecting your 3D views to create "drawing views".

Still - within its limits, the approach is VERY VALID and useful.

The other approach while not quite as simple, and is a bit "heavier" on system resources, is to create solid "models" of the walls. This approach has the DISTINCT advantage of being "projectable" through the soldraw approach, for creating "drawing views" of your model.

Again - isolate the wall lines layer(s). Draw closed rectangles to represent your walls. I'd create another layer for the purpose. Use boolean operations to add/subtract/union the wall rectangles to create the wall intersections you want. You'll have to use the region command to convert the rectangles to regions (2D solids!) first. Then do the adds & subtracts. But for stand-alone walls that don't need a boolean operation to prepare first, just leave that wall as a simple rectangle.
Then- use the extrude command and apply a wall height.

That's it! If you did this on another layer, its REALLY easy to turn on/off the 3D representation. Just freeze/thaw the 3D layer!

Print this and refer to it as you go along.

Good luck!
C. Fee
 
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