Creating 3D Geometry - AutoCAD 2011 and AutoCAD LT 2011: No Experience Required - page 844

5. The box object requires three items of information to be constructed:
two points that define the opposing corners of the object's footprint
and a height value.
At the prompts, click two opposite corners of the back door open-
ing, as shown in Figure 16.15.

FiGuRE 16.15 Defining the footprint of the back door

6. At the Specify height or [2Point]: prompt, enter 7 ′ 6 ↵ ( 2286 ↵ ).
The box appears in place (see Figure 16.16).

FiGuRE 16.16 The first door operand created in place

7. Repeat steps 4 through 6 to create the block-outs for two internal doors
and the sliding-glass door.

When I instruct you
to pick an object
when working in 3D,
you need to click an
edge of the object
or a line that helps
define the object. If
you try to select a
surface, the selec-
tion may not be
recognized.

8. When using the Boolean functions, it's best not to have a situation where
the two operands have coplanar faces. Select the box at the back door.
The box's grips appear all around the base and a single grip at the top.
Dragging the triangular grips changes the lengths of the sides of
the box but doesn't change the angles between the sides. The square
grips move the corners of the box or the box itself, and the single top
grip changes the box's height.

9. Click the triangular grip on the front of the box, and drag it forward
to pull the front of the box out from the front of the cabin. It doesn't