AutoCAD 2002 Bible

Скачать в pdf «AutoCAD 2002 Bible»
Y


The Y option keeps the current origin and rotates the X and Z axes around the current Y axis. You specify the angle.

Z


The Z option keeps the current origin and rotates the X and Y axes around the current Z axis. You specify the angle.


The drawing used in the following Step-by-Step exercise on creating UCSs, ab21-c.dwg, is in the Drawings folder of the AutoCAD 2002 Bible CD-ROM.


Step-by-Step: Creating UCSs


1.    Open ab21-c.dwg from the CD-ROM.


2.    Save it as ab21-4.dwg in your AutoCAD Bible folder. This drawing contains some center lines based on measurements of a chair. OSNAP should be on. Set running object snaps for endpoint, midpoint, center, and quadrant. The UCS icon is set at the origin.


3.    Choose Circle from the Draw toolbar. Use the From object snap to specify the center at @2,0 from О in Figure 21-16. Set the radius to 0.5.


4.    Choose Properties on the Standard toolbar and select the circle you just drew. Change the thickness to 16. Press Enter. Close the Properties window.


5.    Click ORTHO on the status bar to turn it on. Choose Mirror from the Modify toolbar. The circle should still be selected. (If it isn’t, select it.) Specify the endpoint at Q for the first point of the mirror line. Specify any point vertical to Q for the second point of the mirror line. Choose not to delete the source object (the circle).


6.    Repeat the MIRROR command. Select the two circles. Pick the midpoint of the line at 3 for the first point of the mirror line. Pick any point horizontal to the first point for the second point of the mirror line. Press Enter. There are now four legs. Turn ORTHO off.

Скачать в pdf «AutoCAD 2002 Bible»