WHERE ARE CTB FILES STORED IN AUTOCAD 2020?

CTB files, also known as color-dependent plot style table files, define the colors, linetypes, and other plotting parameters used by AutoCAD when plotting to a printer or other output device. These files are essential for ensuring that your plots appear correctly and consistently.

Understanding CTB Files

CTB files are text files that contain a series of commands that define the plotting parameters for a particular printer or output device. These commands include:

• Color assignments: These commands specify which color each object in the drawing will be plotted in.
• Linetype assignments: These commands specify which linetype will be used for each object in the drawing.
• Plot style assignments: These commands specify which plot style will be used for each object in the drawing.
• Other plotting parameters: These commands specify other plotting parameters, such as the paper size, the scale, and the orientation.

Locating CTB Files in AutoCAD 2020

The default location for CTB files in AutoCAD 2020 is:

C:\ProgramData\Autodesk\ApplicationPlugins\PlotStyles

However, you can also specify a custom location for CTB files by setting the CTBFILE environment variable. To do this, follow these steps:

1. Right-click on the My Computer icon and select Properties.
2. Click on the Advanced tab.
3. Click on the Environment Variables button.
4. In the User Variables section, find the CTBFILE variable.
5. If the CTBFILE variable does not exist, click on the New button and create it.
6. Set the value of the CTBFILE variable to the desired location for CTB files.

Using CTB Files in AutoCAD 2020

Once you have created or located a CTB file, you can use it to plot your drawings by following these steps:

1. Open the drawing that you want to plot.
2. Click on the Plot tab in the ribbon.
3. In the Plotter/Device section, select the printer or output device that you want to use.
4. In the Plot Style Table (CTB) section, select the CTB file that you want to use.
5. Click on the OK button to start plotting.

Additional Tips for Managing CTB Files

Here are a few additional tips for managing CTB files:

• Use descriptive names for your CTB files. This will make it easier to find the right CTB file when you need it.
• Store your CTB files in a central location. This will make it easier to keep track of them and to share them with other users.
• Back up your CTB files regularly. This will protect you in case your computer crashes or if you accidentally delete a CTB file.

Frequently Asked Questions

1. Where can I find more information about CTB files?

You can find more information about CTB files in the AutoCAD Help documentation.

2. Can I use CTB files from previous versions of AutoCAD in AutoCAD 2020?

Yes, you can use CTB files from previous versions of AutoCAD in AutoCAD 2020. However, you may need to make some modifications to the CTB file in order for it to work properly in AutoCAD 2020.

3. How can I create a custom CTB file?

You can create a custom CTB file by using a text editor. You can find instructions on how to do this in the AutoCAD Help documentation.

4. How can I share CTB files with other users?

You can share CTB files with other users by copying them to a shared network folder. You can also send CTB files to other users via email.

5. What should I do if I'm having trouble plotting with a CTB file?

If you're having trouble plotting with a CTB file, you can try the following:

• Make sure that the CTB file is located in the correct folder.
• Make sure that the CTB file is compatible with the printer or output device that you're using.
• Make sure that the plotting parameters in the CTB file are correct.