AutoCAD

How to Scale in AutoCAD 2021?

Understanding Scaling in AutoCAD 2021

How to Change the Scale of a Drawing View

  1. Access the Drawing View: Hover your cursor over the specific drawing view that you intend to modify. You will notice the border of the drawing view highlight.

  2. Select the Drawing Area: Click on any empty space within the drawing view. At this point, you will see grips appear around the edges of the drawing view.

  3. Use the Lookup Grip: Locate and click on the lookup grip. A contextual menu will emerge, presenting various scale options.

  4. Choose Your Scale: From the options in the menu, select the desired scale that you wish to apply to the drawing view.

Scaling PDF Files in AutoCAD 2025

  1. Align Command Method: First, draw a line that reflects the actual length as per the dimension (for example, if the dimension indicates 25 feet, create a line that is exactly that length). Type ALIGN into the command line and hit Enter.

  2. Utilize the Scale Command: Alternatively, you can type LINE and press Enter to specify the length and allow scaling adjustments.

Drawing to Scale in AutoCAD

Utilization of specific units and dimensions is crucial when drafting in AutoCAD. Make sure your dimensions correspond accurately to the scale you are working with.

Adding a Scale Bar in Your Drawing

  1. Select the Scale Tool: Navigate to the Annotation palette where you will find various tools, including the bar scale tool.

  2. Insert the Scale Bar: Click to place the scale bar at the desired location within your drawing.

  3. Adjust Orientation: After placing the scale bar, determine its rotation to match the orientation of your drawing.

Understanding Plot Scale in AutoCAD

The plot scale can be defined from the model space via the Plot dialog box, representing a ratio between the model’s drawn units and the physical units utilized in your design. In the layout view, you often deal with dual scales. The main scale typically is set to 1:1, which aligns with the size of the paper you are using.

Setting Up Units in AutoCAD 2025

To configure your drawing units effectively, follow these steps:

  1. Access Drawing Setup: Click on the Utilities menu and select Drawing Setup.

  2. Adjust Units: Within the Drawing Units tab, pick your preferred unit system from the available options, including both imperial and metric types.

Importing PDF Files into AutoCAD

  1. Access the Insert Tab: Click on the Insert tab located on the application toolbar, followed by selecting the Reference panel and clicking on Attach.

  2. Select PDF for Import: In the dialog box that opens, find and select the PDF file you need to import.

  3. Configure Import Settings: After selecting your PDF, the Attach PDF Underlay dialog will appear. Choose the particular page numbers you wish to attach.

Scaling Images or PDFs Post-Insertion in AutoCAD

  1. Draw a Reference Line: Create a line that matches the length shown in the PDF dimensions.

  2. Execute the ALIGN Command: Type ALIGN in the command line and press Enter.

  3. Select the Image: Choose the image you intend to scale, then press Enter again.

  4. Specify Source Points: Identify the starting point on the drawn line, followed by selecting the corresponding point on the image.

Scale Factor Calculations

For a scale factor of 1:20, use the following method:

  1. Conversion: Convert feet to inches (1 foot = 12 inches). Therefore, for 20 feet:
    • Multiply 20 by 12.
    • This yields a scale factor of 240.

How to Calculate Scale for Drawings

To resize an object accurately, divide each dimension by your chosen scale factor. For instance, if the scale is set to 1:6 and the original length of the object measures 60 cm, calculate the new size by dividing:

  • 60 cm ÷ 6 = 10 cm.

Creating Scaled Drawings

For detailed instructions on making scale drawings, refer to instructional videos and tutorials, as they illustrate the entire process visually.

Scale Bar Explanation

A scale bar is a segmented line or bar that conveys the equivalent ground length, typically illustrated in multiples, like kilometers or miles. Scale bars serve to provide a reference for distances on a map.

Adding a North Arrow in AutoCAD 2025

  1. Create a Display Map: If necessary, start by creating a display map and incorporate any viewports required for your project.

  2. Switch to Paper Space: Change your view to paper space.

  3. Select the North Arrow Tool: Click the Layout Tools tab and choose the North Arrow option.

  4. Choose Style and Placement: From the available styles, select your preferred north arrow design. Then, click to set the center point of the north arrow on your layout.

Finding Layout Tools in AutoCAD

  1. Manage Tab Navigation: Go to the Manage tab in the top menu.

  2. Configure Layout Tools: Click the CUI icon to access customizable user interface options. Look for the Layout tools and drag them to the Quick Toolbar for easy access.

FAQ

1. Can AutoCAD 2025 open PDF files?
Yes, AutoCAD 2025 can import vector-based PDF geometry into a drawing file, allowing for seamless integration of existing documents.

2. How do I save a scaled drawing in AutoCAD?
To save a scaled drawing, go to the File menu, select Save As, choose your preferred file format, and ensure all settings are correctly configured for your scaled objects.

3. What is the benefit of using a scale bar?
A scale bar enhances the understanding of distances within the drawing, allowing users to gauge size and distance accurately without requiring additional calculations.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.