AutoCAD 2002 Bible

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The block takes on the layer and properties of the current layer it is inserted on. If you insert the block into another drawing, no layers are created.

The drawing that you need for the following Step-by-Step exercise on working with blocks and layers, ab18-d.dwg, is in the Drawings folder of the AutoCAD 2002 Bible CD-ROM.

Step-by-Step: Working with Blocks and Layers

1.    Open ab18-d.dwg from the CD-ROM.

2.    Save the file as ab18-4.dwg in your AutoCAD Bible folder. This is a portion of an electrical schematic, as shown in Figure 18-12. OSNAP should be on. Set running object snaps for endpoint, midpoint, quadrant, and intersection.

3.    Choose Make Block from the Draw toolbar. In the Name text box of the Block Definition dialog box, type hl switch. Choose Select Objects. Use a selection window to select the entire hi-limit switch box (not including the text labels). Right-click to end selection. Choose Pick point in the Base point section of the dialog box. Use the Quadrant object snap to pick the left quadrant of the left circle in the switch, at 1 in Figure 18-12. Choose Retain in the Objects section. Click OK. The objects in this block were created on the Object layer, which is red with a continuous linetype. The color, linetype, and lineweight are set to ByLayer.

4.    Use a selection window to select the air damper switch. (The objects are currently on the Object layer, which is red with a continuous linetype.) Click the Color Control drop-down list box and choose ByBlock. Do the same with the Linetype Control and the Lineweight Control drop-down boxes. The switch turns black (or white if you are using a black screen). The objects are still selected.

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