The useful tricks of the space bar and Shift key in CAD

Thread Content

　Useful tricks with the space bar: Select the graphic’s base point: (A blue dot appears when an object is selected; click on that blue dot – the red dot represents the base point.) Press the space bar once: to execute the move command； 　　Two spaces: rotation command ； 　　Three spaces: scaling command ； 　　Four spaces: Mirror command. 　　 　　Useful SHIFT trick: Setting offset or rotation capture for the tool. Example: To draw a circle, click with the left button to activate the grip points; click with the right button and select \"Copy\" from the shortcut menu that appears. Drag the mouse horizontally for a certain distance, then click with the left button to determine the position of the first copied circle. Now, hold down the SHIFT key, drag the mouse on the screen again, and click to create the second circle. 　　See! It is isometric replication, that is, a small array! 　　 　　A rotating array can also be created: draw a circle, activate the grips within it, click the spacebar twice to change the command in the command line to \"rotate\", enter the copy command \"C\", specify a rotation angle of 30, and press spacebar to confirm the command. Now, hold down the SHIFT key, move the mouse to rotate the object, and click at the desired position to finalize it – the result will be visible! 　　The SHIFT key can also be used to quickly switch between trimming and extending commands; after entering a command, press SHIFT when selecting the point to which something should be trimmed or extended in order to switch commands. 　　Actually, it’s easier to copy using a line. 　　First, draw a line, select it, and click on the center point (where the red dot appears). At this point, hold down the SHIFT key, drag across the screen for a certain distance before clicking again; when you click once more, you will find that the object has been copied at the same distance. If you release the SHIFT key, it is also possible to copy the object multiple times.