Solid Composites in AutoCAD 3D – Part 2

Thicken

Creates a 3D solid by thickening a surface.

1.   Open       a drawing with 3D surface and display in a 3D view.

2.  Choose    Modify, 3D Operation, Thicken.

or

3.  Type        THICKEN at the command prompt.

Command: THICKEN

Select surfaces to thicken: 1 found

Select surfaces to thicken:

Specify thickness <0.0000>: 1

Solid Composites in AutoCAD 3D - Part 2

Solid Composites in AutoCAD 3D - Part 2-1Interference Checking

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Solid Composites in AutoCAD 3D – Part 1

Union

1.  Open           a drawing with 3D objects and display in a 3D view.

2.    Choose     Modify, Solids Editing, Union.

or

3.    Type          UNION at the command prompt.

Command:      UNION

Select objects: pick objects to union

Select objects: ENTER

Solid Composites in AutoCAD 3D - Part 1

Solid  Objects  Unioned  Together

Solid Composites in AutoCAD 3D - Part 1-1 Subtract

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Thickness and Elevation in AutoCAD 3D

 Thickness Command

1.  Begin       a new drawing using a 3D Modeling workspace.

2.  Choose   View, Viewports, 2 Viewports.

3.  Press      ENTER for the default of two vertical viewports.

4.  Type       PLAN and World in the left viewport.

5.  Choose   SE Isometric for the right viewport.

6.  Type      THICKNESS at the command prompt.

Command: THICKNESS

Enter new value for THICKNESS <0.0000>: 3

7.  Draw     a 5”,2” rectangle using in the LINE command in the  left view.

The lines will have a 3D “thickness” that can be seen in the 3D view.

Thickness and Elevation in AutoCAD 3D

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3D Faces in AutoCAD 3D – Part 2

Edge Command

1.  Type    

EDGE at the command prompt.
Command: EDGE
Specify edge of 3dface to toggle visibility or [Display]: pick edge

2D Solids and 3D Faces AutoCAD 3D Part 1-3Specify edge of 3dface to toggle visibility or [Display]: D

Enter selection method for display of hidden edges [Select/All] <All>: A

** Regenerating 3DFACE objects…done.

Specify edge of 3dface to toggle visibility or [Display]: press enter

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3D Faces in AutoCAD 3D – Part 1

3D Faces

3DFACE creates a three or four sided surface anywhere in 3D space. You can specify different Z coordinates for each corner point of a 3D face. 3DFACE differs from SOLID, which creates a three- or four-sided surface that is parallel to the current UCS and can be extruded.

1.    Begin     a new drawing.

2.  Set    the visual style to Conceptual.

3.  Type    

3DFACE at the command prompt.
Command: 3DFACE
First point: pick
Second point: pick
Third point: pick
Fourth point: pick
Third point: enter

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2D Solids in AutoCAD 3D

2D Solid

Creates solid-filled triangles and quadrilaterals.

1.  Type

SOLID at the command prompt.
Command: SOLID
First point: P1
Second point: P2
Third point: P3
Fourth point: P4
Third point: enter

2D Solids and 3D Faces AutoCAD 3D Part 1

3D Model Objects in AutoCAD 3D Tutorials

 1. Wireframes

A wireframe model is a skeletal description of a 3D object. There are no surfaces in a wireframe model; it consists only of points, lines, and curves that describe the edges of the object. With AutoCAD you can create wireframe models by positioning 2D objects anywhere in 3D space. AutoCAD also provides some 3D wireframe objects, such as 3D polylines (that can only have a CONTINUOUS linetype) and splines. Because each object that makes up a wireframe model must be independently drawn and positioned, this type of modeling can be the most time-consuming.

Wireframe lines in 3D

3D Model Objects AutoCAD 3D Tutorials1

2. Surfaces

Surface modeling is more sophisticated than wireframe modeling in that it defines not only the edges of a 3D object, but also its surfaces. The AutoCAD surface modeler defines faceted surfaces using a polygonal mesh. Continue reading…