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This chapter is from the book ๏”€

This chapter is from the book

Using COPY and Other Edit Commands

Most commands work in the isometric planes just as they do in standard orthographic views. In this exercise, you construct an isometric view of a bracket using LINE and COPY. Then you draw angled corners using CHAMFER. In the next exercise, you will draw a hole in the bracket with ELLIPSE, COPY, and TRIM.

  • arrow.jpg Erase the boxes you previously drew and check to see that Ortho mode is on.

  • arrow.jpg Switch to the left isoplane.

  • arrow.jpg Click the Line tool on the ribbon.

  • arrow.jpg Draw the L-shaped object shown in Figure 11-7.

    FIGURE 11.7

    Figure 11-7 Drawing an L shape

    Notice that this is drawn in the left isoplane and that it is 3.00 units high by 4.00 units long by 1.00 unit wide.

  • arrow.jpg Next, you copy this object 4.00 units back to the right to create the back surface of the bracket.

  • arrow.jpg Click the Copy tool on the ribbon.

  • arrow.jpg Select all the lines in the L.

  • arrow.jpg Right-click to end object selection.

  • arrow.jpg Specify a base point at the inside corner of the L.

    It is a good exercise to keep Ortho on, switch planes, and move the object around in each plane. You can move in two directions in each isoplane. To move the object back to the right, as shown in Figure 11-8, you must be in either the top or the right isoplane.

    FIGURE 11.8

    Figure 11-8 Copying the L shape

  • arrow.jpg Switch to the top or right isoplane and specify a second point of displacement 4.00 units back to the right, as shown in Figure 11-8.

  • arrow.jpg Press <Enter> to exit COPY.

  • arrow.jpg Enter the LINE command again and draw the connecting lines in the right plane, as shown in Figure 11-9.

    FIGURE 11.9

    Figure 11-9 Drawing connecting lines

Creating Chamfers in an Isometric View

Keep in mind that inclined edges in an isometric view do not show true lengths. Edges of inclined planes must be drawn between endpoints located along vertical or horizontal paths in one of the three drawing planes. In this exercise, you create inclined edges by using the CHAMFER command to cut the corners of the bracket. This is no different from using CHAMFER in orthographic views.

  • arrow.jpg Click the Chamfer tool from the Fillet/Chamfer drop-down menu on the Modify panel on the ribbonโ€™s Home tab.

  • arrow.jpg Right-click and select Distance from the shortcut menu.

    AutoCAD prompts for a first chamfer distance.

  • arrow.jpg Type 1 <Enter>.

  • arrow.jpg Press <Enter> to accept 1.00 as the second chamfer distance.

  • arrow.jpg Select the top and left back edges of the bracket to create a chamfer, as shown in Figure 11-10.

    FIGURE 11.10

    Figure 11-10 Chamfering corners

  • arrow.jpg Repeat the CHAMFER command.

  • arrow.jpg Chamfer the other edges so that your drawing resembles Figure 11-10.

  • arrow.jpg To complete the bracket, start the LINE command and draw lines between the new chamfer edges.

  • arrow.jpg Finally, erase the two unseen lines on the back surface and the two corner lines left โ€œin spaceโ€ from the creation of the chamfers to produce whatโ€™s shown in Figure 11-11.

    FIGURE 11.11

    Figure 11-11 Finishing the chamfer and edges

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