How to Load a CTB File in AutoCAD 2019

Understanding CTB Files in AutoCAD

CTB files are critical for managing plot styles within AutoCAD. They are used to assign colors to layers for plotting purposes, determining how objects are printed based on their color. Knowing how to efficiently load these files is essential for achieving the desired output in your drawings.

Step-by-Step Process to Load a CTB File in AutoCAD 2025

Step 1: Access the Plot Style Manager

1. Begin by opening AutoCAD.
2. On the command line, type STYLESMANAGER and hit Enter. This will launch the Plot Style Manager, providing you access to all current CTB and STB files.

Step 2: Adding Your CTB File

1. Locate the folder where your CTB files are stored. If you are unsure, you can find the designated directory by navigating to:

   • Click on Tools from the menu.
   • Select Options.
   • Head to the Files tab and look for Printer Support File Path under the Plot Style Table Search Path.
2. Copy the desired CTB file(s) into this location. After placing them in the folder, note that you may need to close and reopen AutoCAD to refresh the list of plot styles.

Step 3: Set the CTB File for Your Layout

1. Switch to the layout tab of your drawing where you wish to apply the CTB file.
2. Navigate to File, then select Page Setup Manager.
3. Choose the layout you want to modify and click Modify.
4. In the Page Setup dialog that appears, locate the section for Plot Style Table.
5. Select the CTB file you copied earlier from the dropdown menu. Ensure to check the box that reads Plot with plot styles.

Step 4: Saving the Settings

1. After selecting the appropriate CTB file, click OK to save your changes.
2. If necessary, you can create a PDF by clicking Create File in the print dialog once you are satisfied with the setup.

Frequently Asked Questions

1. Can I convert CTB files to STB files?
Yes, AutoCAD allows conversion of CTB (color-dependent) files to STB (named plot styles) files through the Plot Style Table Editor. This is useful if you wish to switch plotting styles seamlessly.

2. Where are AutoCAD plot styles typically saved?
Plot styles are usually found in the following directory: C:\Users\<username>\AppData\Roaming\Autodesk\AutoCAD <version>\enu\Plotters\Plot Styles. If you have customized plot styles, they should be included in the same folder.

3. How do I check if my CTB file is loaded correctly?
Navigate back to the Plot Style Manager. Your CTB file should appear in the list. Open the Page Setup Manager for any layout to verify that your selected CTB file is reflected in the settings.