AutoCAD Pocket Reference. Cheryl R. Shrock

Specify base point: select the stationary point on the object

      5. Specify scale factor or [Copy/Reference]: select Reference

      6. Specify reference length <1>: specify a reference length

      7. Specify new length: specify the new length

      COPY option - creates a duplicate of the selected object. The duplicate is directly on top of the original. The duplicate will be scaled. The Original remains the same.

STRETCH

      The STRETCH command allows you to stretch or compress object(s). Unlike the Scale command, you can alter an objects proportion with the Stretch command. In other words, you may increase the length without changing the width and vice versa.

      Stretch is a very valuable tool. Take some time to really understand this command.

      It will save you hours when making corrections to drawings.

      When selecting the object(s) you must use a CROSSING window.

      Objects that are crossed, will stretch.

      Objects that are totally enclosed, will move.

      1. Select the STRETCH command using one of the following:

       Ribbon = Home tab / Modify Panel /

       or

       Keyboard = S <enter>

      Command: _stretch

      2. Select objects to stretch by crossing-window or crossing-polygon...

      Select objects: select the first corner of the crossing window

      3. Specify opposite corner: specify the opposite corner of the crossing window

      4. Select objects: <enter>

      5. Specify base point or [Displacement] <Displacement>:

       select a base point (where it stretches from)

      6. Specify second point or <use first point as displacements>:

       type coordinates or place location with cursor

TRIM

      The TRIM command is used to trim an object to a cutting edge. You first select the “Cutting Edge” and then select the part of the object you want to trim. The object to be trimmed must actually intersect the cutting edge or could intersect if the objects were infinite in length.

      1. Select the Trim command using one of the following:

       Ribbon = Home tab / Modify Panel /

       or

       Keyboard = TR <enter>

      2. The following will appear on the command line:

      Command: _trim

      Current settings: Projection = UCS Edge = Extend

      Select cutting edges ...

      Select objects or <select all>: select cutting edge(s) by clicking on the object (P1)

      Select objects: stop selecting cutting edges by pressing the <enter> key

      Select object to trim or shift-select to extend or

      [Fence/Crossing/Project/Edge/eRase/Undo]: select the object that you want to trim.

       (P2) (Select the part of the object that you want to disappear, not the part you want to remain)

      Select object to trim or [Fence/Crossing/Project/Edge/eRase/Undo]: press <enter> to stop

      Note: You may toggle between Trim and Extend. Hold down the SHIFT key and the Extend command will activate. Release the SHIFT key and you return to Trim.

      Fence Use a “Fence” line to select objects to extend.

      Edge See page 1-23

      Project Same as Edge except used only in “3D”

      Crossing You may select objects using a Crossing Window.

      eRase You may erase an object instead of trimming while in the Trim command.

      Undo You may “undo” the last trimmed object while in the Trim command

UNDO AND REDO

      The UNDO and REDO tools allow you to undo or redo previous commands.

      For example, if you erase an object by mistake, you can UNDO the previous “erase” command and the object will reappear. So don’t panic if you do something wrong. Just use the UNDO command to remove the previous commands.

      The Undo and Redo tools are located in the Quick Access Toolbar.

       Note:

      You may UNDO commands used during a work session until you close the drawing.

       How to use the Undo tool.

      1. Draw a line, circle and a rectangle.

       Your drawing should look approximately like this.

      2. Next Erase the Circle and the Rectangle.

       (The Circle and the Rectangle disappear.)

      3. Select the UNDO arrow.

      You have now deleted the ERASE command operation.

      As a result the erased objects reappear.

      How to use the Redo command:

      Select the REDO arrow and the Circle and Rectangle will disappear again.

WIPEOUT

      The Wipeout command creates