Scaling and Rotating Blocks AutoCad Help

In step 8, you can See the tub rotate as you move the cursor. You can pick a point to fix the block in place, or you can enter a rotation value. This was the result of selecting the Specify On-Screen option in the Insert dialog box. You may find that you want the 1c.utation’sSpecify On-Screen option turned on most of the time to allow you to clust the rotation angle of the block while you are placing it in the drawing.
.• You aren’t limited to scaling or rotating a block when it is being inserted into a drawing. You can always use the Scale or Rotate tools, or modify an inserted block’s properties to stretch it in one direction or another. You’ll learn about modifying a block’s properties later in this chapter.
The other options in the Insert dialog box that you did not use are the Scale button group options. These options let you scale the block to a different size. You can scale the block uniformly, or you can distort the block by individually changing its X, Y,or Z scale factor. With the Specify On-Screen option unchecked, you can enter specific values in the X, Y,and Z input boxes to stretch the block in any direction. If you turn on the Specify On-Screen option, you’ll be able to visually adjust the X, Y,and Z scale factors in real time. While these options are not used often, they can be useful in special situations, where a block needs to be stretched one way or another to fit in a drawing.

Using an Existing Drawing as a Symbol

Now you need a door into the bathroom. Since you have already drawn a door and saved it as a file, you can bring the door into this drawing file and use it as a block.
1. In the Draw toolbar, click the Insert Block tool or type I.J.
2. In the Insert dialog box, click the Browse button at the top of the dialog box. The Select Drawing File dialog box appears.
3. Locate the Door file and double-click it. You may need to go to a different drive and folder from the default folder shown in the Select Drawing File dialog box.
4. When you return to the Insert dialog box, make sure the Specify On-Screen options for the S ale and Rotation button groups are checked, then click OK. As you move the cursor around, notice that the door appears above and to the right of the cursor intersection, as in Figure 4.3.
At this point, the door looks too small for this bathroom. This is because you drew it 3 units long, which translates to 3″.Metric users drew the door 9cm long. Pick a point near coordinates 7′-2″,2′-4″, so that the door is placed in the lower-right comer of the room. Metric users should use the coordinate. 210,70.
5. If you take the default setting for the X scale of the inserted block, the door will remain 3″ long or 9cm long for metric users. However, as mentioned earlier, you can specify a smaller or larger size for an inserted object. In this case, you want a 3′ door. Metric users want a 90cm door To get that from a 3″ door, you need an Xscale factor of 12 or 10 for metric users. (You may want. to look again at Table 3.3 in Chapter 3 to see how this is deterrnined.) Enter 12.J now, at the X scale factor prompt. Metric users should enter 10.J. 7. Press .J twice to accept the default y = x and the rotation angle of 0°.

Now the command prompt appears, but nothing seems to happen to the drawing. This is because when you enlarged the door, you also enlarged the distance between the base point and the object. This brings up another is!’ue to be aware of when you’re considering using drawings as symbols: All drawings have base points. The default base point is the absolute coordinate 0,0, otherwise known as the origin, which is located in the lower-left comer of any new drawing. When you drew the door in Chapter 2, you didn’t specify the base point. So when you try to bring the door into this drawing, AutoCAD uses the origin of the door drawing as its base point

Because the door appears outside the bathroom, you must first use the Zoom. All option to show more of the drawing, and then the Move command on the Modify toolbar to move the door to the right-side wall of the bathroom. Let’s do this now.
1. Click View >- Zoom >- All from the menu bar pull-down menu. Zoom Alldisplays the area set by the limits of your drawing (Format Drawing Limits), plus any other objects that may be outside those limits. The view of the room shrinks away and the door is revealed. Notice that it is now the proper .size for your drawing.
2. Choose Move from the Modify toolbar, or type M-I.
3. To pick the door you just inserted, at the Select objects: prompt, ‘ciick a point anywhere on the door and press -I. Notice that now the entire Joor is highlighted. This is because a block is treated like a single object, even though it may be made up of several lines, arcs, and soon.
4. At the Speci fy base poi nt: prompt, turn the Running Osnaps back on and pick the lower-left comer of the door. Remember that pressing the F3 function key or double-clicking the word OSNAPin the status bar toggles the Running Osnaps on or off.
5. At the Second poi nt: prompt, use the Nearest Osnap override, and position the door so your drawing looks.
Because the door is an object you will use often, it should be a ,’ommon size so you don’t have to specify an odd value every time you insert it. It would also be helpful if the door’s insertion base point were in a more convenient location. that is, a location that would allow you to place the door accurateiy within a well opening. Next, you will modify the Door block to better suit your needs.

Posted on November 7, 2015 in Organizing Your Work

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