How to Scale in AutoCAD Without Moving?

Understanding Scaling in AutoCAD

Scaling objects in AutoCAD is essential for accurately adjusting sizes within a drawing without altering their positions. This method allows for precision in design, especially when creating detailed plans. The following guide provides steps on how to scale objects in AutoCAD without moving them.

Step-by-Step Guide to Scale Without Moving

Step 1: Determine the Scale Factor

1. Compute the Scale Factor: To ascertain the scaling size, divide the size you want by the current size. For example, if you aim to scale an object to be 50 units long from its current 25 units, your scale factor is ( 50 ÷ 25 = 2.0 ).

Step 2: Start the SCALE Command

1. Access the Command: Type SCALE into the command line or use the shortcut key SC. Press Enter to activate the command.

Step 3: Select the Object

1. Choose the Object: Click on the object(s) you wish to scale in your drawing. Make sure you select all necessary elements to maintain proportions.

Step 4: Specify the Base Point

1. Select a Base Point: You need to define a base point which will serve as the anchor when scaling. Choose a point on the object or at the coordinates you desire (e.g., 0,0,0 for absolute scaling).

Step 5: Enter the Scale Factor

1. Input the Scale Factor: After selecting the base point, you will be prompted to input the scale factor. Enter the computed scale factor (like 2 in the previous example) and press Enter.

Step 6: Verify the Scale

1. Check the Dimensions: Use the dimension tool to verify that the object has scaled accurately to the new size without shifting its position.

Scaling Multiple Objects

AutoCAD allows the simultaneous scaling of several objects, but they will scale relative to a common base point. To maintain individual object alignment:

1. Select Each Object: Instead of selecting all at once, choose each object.
2. Utilize the Bounding Box Method: For a more precise scaling, consider using the bounding box center as a reference. This may involve more manual selection, but ensures that each piece functions correctly within the overall design.

Scaling in One Direction

If you require more control and want to scale only in one dimension (e.g., height):

1. Choose the Object: Select the object you want to scale.
2. Right-click and Select Scale: From the options, click on Scale.
3. Specify Scale Points: Determine the direction (X or Y) where you want to apply the scale and enter the desired scale factor accordingly.

Importing and Using LISP for Advanced Scaling

For tasks requiring extensive scaling functionalities, LISP routines can enhance your efficiency:

1. Load the LISP file: Access the CUI command and navigate to your LISP files section.
2. Select and Load: Right-click and choose "Load LISP" to integrate scale-enhancing routines into your AutoCAD environment.

FAQ

1. How can I scale an object while maintaining the original position?
To retain the position, ensure that after activating the SCALE command, you accurately select a base point. This point acts as an anchor, enabling the object to maintain its original location while changing size.

2. Is it possible to scale using a reference length?
Yes, you can use reference scaling. When prompted for a reference length during the scaling process, you must click on a point and then input a specific measurement to dictate how large the object should become relative to the chosen point.

3. Does AutoCAD allow scaling to fit specific dimensions?
AutoCAD offers capabilities to fit objects to specified dimensions via the SCALE command. By setting your scale factor based on the desired size, you can quickly resize objects to meet plotting or design requirements.