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>> Hello. Welcome[br]to Module 12.

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In this module, we[br]are going to follow

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the book AutoCAD[br]2015, Bible,

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and Chapter 24,

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creating solids[br]and editing in 3D.

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In this chapter, we are

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working on creating[br]base geometrical shape,

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drawing extrude,[br]swept, revolved,

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lofted and polyline solid,

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manipulating[br]solid directory,

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creating a mesh subject.

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For drawing, basic,[br]smooth, solid,

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AutoCAD make it[br]easy to create

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most basic 3D[br]geometric shapes.

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These shapes are easy[br]to draw because you can

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dynamically see the[br]result as you draw.

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For example, drawing[br]box in Figure

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24.2 shows a solid box

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with a hidden visual[br]style applied.

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To draw a box,[br]follow these steps.

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Choose home tab,[br]modify panel,

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3D solid, drop[br]down menu box.

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I'm going to[br]go to AutoCAD.

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We are in the 3D[br]modeling space.

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We are under[br]the solid box.

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And the best way of

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seeing the result[br]is to change

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the view to

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either Southwest[br]or Southeast view.

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Box.

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At the specified[br]first corner

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or center prompt,

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specify any corner of[br]the box or right click

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and choose a center to

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specify the 3D[br]center of the box.

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Not the center[br]of the base.

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If you specify the[br]corner, the default,

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you then see the[br]specified other corner

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or cube length prompt.

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The default is to pick[br]the opposite corner

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in the X and Y plane.

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This defines the[br]base of the box.

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You can define[br]the base just

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like you define[br]any rectangle by

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dragging and picking[br]the opposite corner or

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by entering a coordinate

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at the specifying height,

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or pick two points to[br]specify the height.

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This complete the box.

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If you specify the center

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at the first prompt,

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you see the[br]specifying center

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of the box appears.

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If you pick the[br]corner of the box,

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AutoCAD then ask you

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for the height to[br]complete the box.

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If you specify the length,

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AutoCAD then ask for[br]the width and height.

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If you use the[br]cube option,

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other AutoCAD asks for

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a length and[br]complete the box.

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You can specify a[br]negative length,

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width or height to

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build the box in the[br]negative direction.

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If you specify the[br]center of the cube,

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don't forget that the[br]centre's Z coordinate

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is different from the[br]corners' Z coordinate.

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AutoCAD always[br]create the box

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parallel to the XY plate.

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Drawing a wedge.

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A wedge is a box sliced[br]diagonally in half.

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The prompts are[br]virtually the

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same as for the[br]box command.

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Figure 24.3,[br]which is here,

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24.3, shows two[br]solid wedge.

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For creating a wedge,

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follow the steps[br]from the book,

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going back to AutoCAD.

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Choose a home tab,

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modeling panel, 3d[br]solid drop-down menu.

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Wedge.

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At all specified[br]first corner,

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specify any corner[br]of the wedge or use

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the center option to

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specify 3D center[br]of the wedge.

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If you specify the[br]corner by default,

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you then see the[br]specified other corner

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or cube length prompt.

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The default is to pick

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the opposite corner[br]in the XY plane.

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You can also define it[br]by using a coordinate.

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The command then[br]asks you for

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the height in[br]the Z direction.

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This complete the wedge.

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If you use the[br]cube option,

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AutoCAD ask for one length

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and complete the wedge.

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For positive[br]length, the wedge

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slopes downward in the[br]positive Z direction.

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However, if you have[br]a dynamic input on,

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the slope will follow

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the direction[br]of the cursor.

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If you use the[br]length option,

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AutoCAD asks you for[br]a width and height.

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If you specify the center,

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you see the specified[br]center prompt.

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Specify the center point,

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the specified corner or

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cube length[br]prompt displays.

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If you pick the[br]corner of the wedge,

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the command asks[br]for the height.

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If you specify a length,

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AutoCAD then ask for[br]the width and height.

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If you use the[br]cube option,

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AutoCAD ask for the[br]length and complete

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the wedge. Drawing cone.

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You can draw cones with

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a circular or[br]elliptical bases.

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By specifying[br]negative height,

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you can create an[br]individual cone like

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an ice cream cone by

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specifying the[br]axis endpoint,

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the APX, you can draw

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cones on the angle from[br]the X and Y plane.

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You can also specify a[br]top radius to create

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a truncated cone,

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sometimes called[br]a frustum cone.

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Figure 24.4 shows[br]some cones.

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So here is the steps[br]for drawing cone,

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going back to AutoCAD.

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Choose Home tab[br]modeling panel,

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3D, solid dropdown menu,

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home tab modeling,

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solid dropdown[br]menu, find cone.

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At the specified center[br]point or base of 3D,

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2D elliptical,

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specify the center[br]of the base.

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Just click on the screen.

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If you want a circle[br]con, otherwise,

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use the two-point[br]or three-point

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or tangent-tangent[br]radius option

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to define a circle basis.

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Use the optical option,

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define an elliptical base.

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If you specify a[br]center point at

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a specify base,[br]radius or diameter.

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If you specify center,

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which we specify center,

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specify a radius or use

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a diameter option,[br]specify the diameter.

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If you choose the[br]elliptical option,

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use a prompt to define[br]the elliptical base.

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Then prompts are like

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the prompts for the[br]ellipse command.

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So here we are at

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specify base radius[br]or diameter,

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just click anywhere[br]on the screen,

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and then you see[br]specify a height.

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Specify the height[br]by dragging

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or entering a value.

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Use the two-point[br]option to

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specify the height by[br]picking two points.

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At the access[br]endpoint option

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is another way to[br]specify the height

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and enables you to create[br]the angle of cone.

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By default, the[br]access endpoint is

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a relative[br]coordinate based

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on the center of the base.

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The top radius option

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create a truncated cone.

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I'm going to give a[br]height, click here,

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I'm changing the visual[br]style to conceptual.