This method scales the object equally in all directions. It is also possible to scale an object using a reference object. A scale factor greater than 1 enlarges the object. To scale an object you can specify a base point and a length, which will give a scale factor. You can choose whether to delete or retain the original object. To specify the temporary mirror line, you enter two points. You flip the object about an axis called a mirror line to create a mirror image. It is useful for creating symmetrical objects because you can quickly draw half the object and then mirror it instead of The polar array rotates around the center point which you can select by clicking on the center point button in the array window. In the same manner it's possible to create a polar array: When the array window reappears, select either Preview or OK to execute the array command. When you're satisfied with the settings, select the object to use in the row operation, by first clicking on the 'Select Objects' button and then on the objects themselves.įinish the selection by pressing or Now input the row and column offset: 30 units to the right and 20 units upward.ĪutoCAD automatically shows a preview of the array operation in the white square, try experimenting with different values (for instance a negative value instead of a positive one) to see what happens. We're going to create a grid of I-beams, lets first input the number of rows and columns (in this case 3 and 4). In this screen we need to input the number of Rows (horizontal direction) and Columns (vertical direction) and their respective offset. This is especially useful when you need to duplicate several objects at the same distance from each other (columns in a parking garage for instance).Īfter clicking on the array button the following screen will appear:
Now you can position the object in the same way as you would with a starting point of a line.Ĭreate copies of objects in a rectangular or polar pattern. Select objects, press copy and specify a base point (in a similar fasion as with the move tool) When using an absolute angle: Specify the base point and then specify the rotation angle. You can rotate objects with an absolute or relative angle. Moving an object can either be done with the aid of object snap, or by using relative coordinates. So if you input coordinates, the base point is the point where the coordinates relate to. The base point is essentially the point where you 'grab' the objects. Select the objects and specify the base point. To extend: Click the Extend command optionally select the object you want to extend to select the line(s) you want to extend. Extending a object works in the same way as trimming. For example a line can be exactly fitted between objects. With the extend option you can shorten or lengthen objects to meet the edges of other objects. Every line that is crossed by the line you draw, will be selected and trimmed. This allows you to quickly select the lines you want to trim, by drawing a line across them.
You might want to take a look at the fence (fe) selection option. To trim multiple objects at once you can drag a selection window. To trim an object: Type tr in the command line optionally select the line(s) you want to trim (otherwise all objects are used, which is fine in most cases) select the objects to trim. Objects can exactly be fitted between these objects. With the trim option objects can be shortened or lengthened with the edges of other objects. To offset: First select the offset distance select the original object specify on which side you want to offset. This option can be useful to make closed steel profiles. If this object is a Polyline or a Circle, the duplicate shape will be transformed inwards or outwards. As the name sugestes, modify tools are used to modify existing lines and objects.ĪutoCAD has a whole range of modify tools this chapter will explain the most commonly used.Ĭreate a duplicate object parallel with the original object. While working with AutoCAD, you'll quickly run into situations that requere you to use modify tools.
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