Lesson50- STRETCH command

You can combine the effects of Move & Extend or Trim in a single

operation to Stretch existing designs into new shapes.

you must use a Crossing or CPolygon tool to select objects for

Stretch to function properly.

If an object is entirely inside the selection box then the entire object is Moved by the specified displacement.

you can actually use Stretch in place of Move if you select the desired objects to move using a Crossing or CPolygon tool.

If endpoints of LINEs & ARCs are inside the Crossing box these

endpoints are Moved by the specified displacement.

AutoCAD reconnects moved endpoints to Stretch the selected

objects into a new shape.

you avoid having to use Trim or Extend because AutoCAD automatically reconnects stretched endpoints.

Specifying The Displacement

Specifying The Displacement

  • You can specify the displacement for Stretch in the same way as for the Move command.
  • You can enter displacements directly as X,Y at the first prompt then press <enter> when AutoCAD prompts for the second point.

Command: STRETCH↵
Select objects to stretch by crossing-window or crossing-polygon…
Select objects: (pick in empty space near P1)
Specify opposite corner: (pick near P2 for an implied crossing tool)
Select objects: ↵
Specify base point or displacement: – 10,0 ↵
Specify second point of displacement: ↵
Command:

You can also pick a base point & a second point of displacement and AutoCAD will calculate the displacement automatically.

  • this approach is practical to use with the POLAR tool when you use direct distance entry to specify the second point.
  • pick ANY point as the base point and move your crosshairs to invoke the desired direction for the POLAR tooltip angle.
  • then type the desired distance at the keyboard and press <enter> to stretch the selected objects in this direction.

practice using STRETCH

  1. Close the drawing from the previous exercise if it is open.
  2. Open the T108_12.dwg drawing in your personal folder.
  3. Pick Modify + Stretch. Hold your pickbox near P1 such that it is not above any object then left-click. Move your crosshairs near P2 and left-click to use an implied Crossing tool. Press <enter> and enter –10,0 as the displacement and then press <enter> at the next prompt for the second point of displacement.

Command:_stretch
Select objects to stretch by crossing-window or crossing-polygon…
Select objects: (pick in empty space near P1)
Specify opposite corner: (pick near P2 for an implied crossing tool)
Select objects: ↵
Specify base point or displacement: – 10,0 ↵
Specify second point of displacement: ↵
Command:

  1. Right-click in the drawing area to invoke a shortcut and select Repeat Stretch.
  2. Make sure the POLAR status bar button is On (left-click on it if it is Off).

  1. Hold your pickbox near P1 such that it is not above any object then left-click. Move your crosshairs near P2 and left-click to use an implied Crossing tool again. Press <enter> to signal AutoCAD that all objects have been selected.

  1. Pick near P3 when prompted for the first point or displacement. Move your crosshairs down and when your POLAR tooltip angle is 270 type 5 and press <enter> to use direct distance entry for the second point of displacement.

You still entered a displacement directly this time but you did not have to enter this displacement using coordinates.

direct distance entry makes it easier to focus on your task without having to type coordinates.

  1. Save the changes to this drawing and Close the file.

More practice?

  1. Open the T108_13.dwg drawing in your personal folder.

At the moment the two horizontal walls identified above are NOT aligned vertically in this drawing file.

you will use the Stretch command in the next few steps to make the wall on the right become aligned with the wall on the left.

  1. Pick Modify + Stretch & pick near P1 then P2 to select the desired wall using an implied Crossing tool. Press <enter> to signal AutoCAD that you have selected all objects.

  1. Pick the Zoom Realtime button in the Standard toolbar and drag your cursor upwards for an enlarged view of your screen. Then press <esc> to complete Zoom and return transparently to the Stretch command.

You are about to use object snaps to supply the base point & 2nd point of displacement to align the selected wall with another wall

  • you had to be Zoomed out to select the entire wall
  • but it would be difficult (impossible?) to specify the correct points 
when you are Zoomed out.
  • invoking display commands from a menu uses these commands transparently which temporarily suspends the running command.
  1. Left click on OSNAP to turn it On (if it is Off). At the prompt for the first point of displacement hold your crosshairs on the outside corner to invoke the Endpoint osnap shown and left-click to use this point.

  1. Press and hold <shift> while you right-click in the drawing area to invoke a shortcut for osnap overrides. Select Perpendicular.

  1. Hold your crosshairs near the bottom of the wall LINE near P1 to invoke a Perpendicular tooltip and left-click to use the Perpendicular osnap marker as the second point of displacement.

  1. Pick the Zoom Previous button on the Standard toolbar.

You supplied a base point & a second point and AutoCAD calculated the displacement automatically.

you did not even have to know what these coordinates were because you used object snaps.

  1. Save the changes to this drawing and Close the file.

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