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# Uncategorized

First, to explain the funny name : “It was named after George Boole, who first defined an algebraic system of logic in the mid 19th century.” Working in 3D usually involves the use of solid objects. At times you may need to combine multiple parts into one, or remove sections …

For the next few lessons, you should switch to the 3D modeling workspace. Look for the icon in the bottom right of the AutoCAD screen. What is a Primitive Solid? A primitive solid is a ‘building block’ that you can use to work with in 3D. Rather than extruding or …

If you are using AutoCAD 2010, click here for the tutorial. – for AutoCAD 2008, click here. For the next few lessons, you should switch to the 3D modeling workspace. Look for the menu in the top left of the AutoCAD screen. Older versions may have this in the bottom right. You should …

Below is a sample drawing showing 2 different revolved objects (lamp and lampshade). It will also be your goal in this lesson to duplicate similar objects. So far you’ve only worked with very basic blocks. Suppose that you need to draw something other than a rectangular cube. You did some …

The purpose of this lesson is to look further at the EXTRUDE command. As you saw in Lesson 3-7, it can be used to create a 3D solid from a closed 2D shape. Two other ways you can extrude (which you may have seen as options on the command line) are to taper …

In this lesson, you’ll begin using true 3-D commands. First you will create a 2-D region and then extrude it into a 3-D solid. Then you will add 3-D surfaces to the tops of your previous drawing (line thickness) to close the back, sides and seat. Begin a new drawing …

In this lesson you’ll create the same chair by drawing lines and then giving them thickness. Think of thickness as the height of the line or how tall it is (like a fence in your yard). This is different from the width of the line that you learned in the polyline lesson. This is a …

In this lesson, you will be drawing two objects. First, you will draw the shape from the isometric exercise (refer to that exercise for dimensions) using the same line command that you have always used. Then you will draw a simple chair using the same method. This exercise is good practice to work on …

AutoCAD has a few ways for you to view an object other than the plan view that you have used for your 2-D drawings. For quick, easy views use the pull-down menu options. To do this choose View > 3-D Viewpoint > (then select one of the four bottomisometric options). Look at the …

By now you should be very comfortable working your way around the X-Y coordinate system. Anyway, here is a quick review. Looking from the plan (top) view, this is what you see to figure out where is positive X and positive Y. If you were to look at the same …