AutoCAD 3D

Lesson28 – Backgrounds & Landscapes

Use Background to set the background of your rendered image. you can use a Solid color or a Gradient of varying colors or use a bitmap Image file (e.g. cloud.tga) to make your renderings appear more realistic (e.g. the sky for a 3D house) or select Merge to use the current AutoCAD display as the background for the rendering. Fog lets you gradually mask objects that are further away & you can control where the fog begins and ends. you Read More...

Lesson27 – Assigning Materials In Models

Objects in the real world appear the way they do because of their surface material properties. you must understand how to work with materials to make your AutoCAD renderings appear more realistic and you must check Apply Materials when you Render to see the effects of materials assigned to surfaces in your model. Default Material Surfaces do not have material definitions assigned to them in new drawings created from scratch. surfaces are rendered using the default global material if there is Read More...

Lesson26 – Creating Lights & Defining Scenes

Use the Light command to create & edit the 4 light source types that include point, spot, distant & ambient lights. Light Blocks AutoCAD inserts a block at light locations to store lighting parameters as block attributes when you create new lights. the block is inserted on the current layer & attributes are on the ASHADE layer (which is automatically generated if required). there is no block required for ambient lighting as there is only one ambient light source. The ASHADE layer Read More...

Lesson25 – Saving Named Views To Render.

You can Render the current view but composing that view every time you want to create a rendering can be time consuming. you will probably want to use 3dorbit to compose & optimize a view for the active viewport. you may also want to change the projection to perspective for more realistic images. the right-click shortcut menu (when 3dorbit is running) is a convenient source of many tools to optimize your current view. When you are satisfied your view you Read More...

Lesson24 – Rendering Overview

Why Render? Your ability to effectively communicate design concepts to others can be an important skill in any industry. traditional 2D drawings contain design details for construction but many people do not have the required skills, time or desire to understand the design information presented in drawing formats. Full or reduced scale models and working prototypes are not as demanding for an audience to understand but they are also expensive and time consuming to make which cannot be justified in many Read More...

Lesson23 – Updating Changes To SOLIDs

SOLIDs and their generated 2D drawings (made with Soldraw & Solprof) are not associative drawings will not match modified SOLIDs unless you use Soldraw or Solprof again to update the drawing. PRACTICE UPDATING CHANGES TO SOLIDs » 1 Open the T305_8.dwg file in your personal folder. » 2) Left-click on the Model tab to switch to the model. 3) Select Solid in the Layer drop-down list on the Object Properties toolbar to make it the current layer. 4) Pick Format + Layer. Read More...

Lesson22 – Generating Isometric Views

When you use SOLID models to generate 2D drawings you can easily add an isometric view with hidden lines removed. this will make it easier to visualize your parts compared to drawings that include only orthographic views. You can create a viewport that shows the SOLID from an isometric viewing direction (e.g. SE Isometric) then set up the viewport so that it will always Plot with hidden lines automatically removed. select the viewport with no command running and right-click in Read More...

Lesson21 – Dimensioning The Layout

Create dimensions in the Model (you will see MODEL in the status bar) from the Layout tab. the UCS saved with each viewport is normally parallel to the view when you create drawings using default settings. you would have to use the View option of Ucs if for some reason the current UCS in the current viewport is not parallel to the view. if there is not enough room for dimensions you can use grip editing techniques to change Read More...

Lesson20 – Generating 2D Views With SOLDRAW

Once viewports have been properly set up you can use Soldraw to automatically create the drawing views for each viewport. you are prompted to select viewports created by Solview. you are automatically switched to paper space when you invoke Solview (if PAPER is not already displayed in the status bar). AutoCAD generates 2D geometry for each viewport and places these new objects in the MODEL on appropriate layers. you can change the special layer colors & linetypes (e.g. use HIDDEN Read More...

Lesson19 – Setting Up Viewports With SOLVIEW.

Your first task (before setting up viewports on a Layout) should be to set up the desired Layout for your 2D drawing using Pagesetup. you can refine the setup with Pagesetup later on but you should (at least) initially select the desired plot device & sheet size. If you have not already set up a layout you will invoke Pagesetup automatically by left-clicking on a layout tab you can also invoke Pagesetup in a shortcut by making a layout current, Read More...

Lesson18 – Generating 2D Drawings From SOLIDs – Process Overview

Once you have created a SOLID model in AutoCAD 2000 you can use tools to generate 2D drawings (i.e. a Layout ready to Plot). these tools demand more effort than the relatively automatic process used in Mechanical Desktop and these layouts are NOT automatically linked to the SOLID model (i.e. models & drawings are not associative). however, you can use these tools on SOLIDs to generate traditional 2D drawings that satisfy specific drafting standards. First Create The SOLID Model You must Read More...

Lesson17 – Tools To Analyze SOLIDs

The Massprop command is a quick way to compute basic mass properties of selected SOLIDs relative to the current UCS. two common properties are volume (which is equal to the mass                                                   because AutoCAD assumes density is 1) & the centroid point. you can also compute moments of inertia, products of inertiaand radii of gyration. Read More...

Lesson16 – Introduction To SOLIDEDIT

This section introduces the 15 options of the Solidedit command. you can invoke the desired option directly from the Modify + Solids Editing pulldown menu or the Solids Editing toolbar. Overview Three main option categories of Solidedit are Face, Edge & Body. Command: SOLIDEDIT↵ Solids editing automatic checking: SOLIDCHECK=1 Enter a solids editing option [Face/Edge/Body/Undo/eXit] <eXit>: (invoke an option) Most Face options let you change the shape of SOLIDs using the Extrude, Move, Offset, Delete, Rotate & Taper sub-options you can also copy faces & Read More...

Lesson15 – FILLET, CHAMFER & SLICE

AutoCAD offers different options when you use Fillet on SOLIDs compared to when you use Fillet on 2D objects. if you select a SOLID at the first prompt AutoCAD highlights the selected edge and lets you specify a new radius. you can press <enter> to terminate the Fillet command if you want to fillet only the one selected edge. You can continue to select more edges and you can change the radius for these other edges in the same Fillet Read More...

Lesson14 – Standard SOLID Primitives

You can generate all six SOLID shapes illustrated on this page by creating appropriate 2D geometry & then using Extrude or Revolve. but you can also create these SOLID primitives using an AutoCAD command of the same name as the desired primitive. this approach lets you create simple SOLIDs directly without having to sketch 2D profiles that must be extruded or revolved. for example, you can use Cylinder to create a SOLID that will be Subtracted from other SOLIDs Read More...

Lesson13 – EXTRUDE, REVOLVE & Boolean Operations

In this section you will learn how to start many 3D modeling projects using 2D geometry and 5 key commands. you will learn how to Extrude & Revolve 2D geometry to create complex SOLID objects and you will learn how to use Subtract, Union & Intersect to combine SOLIDs in boolean operations. You can use Extrude to convert closed LWPOLYLINES, REGIONS, CIRCLES, ELLIPSEs and closed SPLINEs into SOLID objects. you are prompted to select (2D) objects and each selected object Read More...

Lesson12 – UCSs In Multiple Viewports

Before all viewports always used the current UCS. now each viewport can be associated with a unique UCS if you choose to Save UCS with viewport (default in AutoCAD 2000). you automatically use the UCS saved with a viewport when you make that viewport the current viewport. For example, this new feature makes it easier to dimension 2D drawings that have been projected from a 3D SOLID. This technique for automatically creating 2D drawings from 3D SOLIDs is beyond the scope of Read More...
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