How to Increase the Toposolid Points Threshold in Revit

Revit 2026 introduces an exciting improvement for site modeling: you can now adjust the toposolid point threshold directly through the Revit.ini file. This enhancement lets you fine-tune the precision of your toposolid creations—ranging from 10,000 to 50,000 points—enabling more detailed and accurate models when using classified LiDAR data with our free Topography plugin. In this tutorial, we’ll guide you through the process of editing the Revit.ini file to change the threshold, explain the implications of these changes, and provide tips on optimizing performance.

Note: Changes made to the Revit.ini file will apply only to new toposolids created after the modification. Existing toposolids will retain the threshold value set at the time of their creation. Also, while increasing the number of points can improve model detail, it may also lead to longer modification times.

Step 1: Confirm You Are Running Revit 2026

Before proceeding, ensure that you are using Revit 2026. The new toposolid threshold adjustment is supported only in this version. To check your Revit version:

1. Open Revit.
2. Navigate to Help > About Revit.
3. Confirm that the version listed is 2026.

Step 2: Locate the Revit.ini File

The Revit.ini file contains advanced configuration settings that control various aspects of Revit’s behavior, including the toposolid creation threshold. In Revit 2026, this file is typically located in the user’s AppData directory. Follow these steps to find it:

1. Open File Explorer on your Windows computer.
2. Navigate to the following path (replace [your user name] with your actual Windows username):
   C:\Users\[your user name]\AppData\Roaming\Autodesk\Revit\Autodesk Revit 2026\
3. Look for the file named Revit.ini.

Tip: If you don’t see the AppData folder, you may need to enable the display of hidden files. To do this, open File Explorer, click on the View tab, and check the box for Hidden items.

Step 3: Back Up the Revit.ini File

Before making any modifications, it’s crucial to create a backup of your Revit.ini file. This way, you can revert to the original settings if needed:

1. Right-click the Revit.ini file.
2. Select Copy and then Paste it into the same directory.
3. Rename the copied file (e.g., Revit_backup.ini) for safekeeping.

Step 4: Open the Revit.ini File for Editing

Use a plain text editor—such as Notepad, Notepad++, or Visual Studio Code—to open the Revit.ini file. Avoid using word processors like Microsoft Word, as they may add formatting that can interfere with the configuration.

1. Right-click on the Revit.ini file.
2. Choose Open with and select your preferred text editor.

Step 5: Locate and Edit the Toposolid Threshold Settings

Within the Revit.ini file, you need to find the parameters related to the toposolid point threshold. Look for the following keys:

• LinkToposolidMaxPointThreshold
• NativeToposolidMaxPointThreshold

They might appear under a section related to toposolid settings or advanced graphics. By default, these values are set to 20,000 points in Revit 2026—a twofold increase compared to previous versions.

1. Use the text editor’s Find function (usually Ctrl+F) and search for LinkToposolidMaxPointThreshold.

2. Once located, you might see a line like:

    

   LinkToposolidMaxPointThreshold = 20000

3. To adjust the threshold, change the value according to your needs. For example:

   • For a lower detail level:
     LinkToposolidMaxPointThreshold = 10000
   • For maximum detail:
     LinkToposolidMaxPointThreshold = 50000

4. Similarly, find and modify the NativeToposolidMaxPointThreshold key:

    

   NativeToposolidMaxPointThreshold = 20000

   And update it to your desired value if necessary.

5. Save the file after making your changes (Ctrl+S).

Important: Higher point thresholds provide greater detail in your toposolid models but may lead to longer modification times. Adjust the value based on your project’s requirements and your system’s capabilities.

Step 6: Restart Revit

For the changes to take effect, you must restart Revit:

1. Close Revit completely.
2. Reopen Revit 2026.
3. Create a new toposolid or import data to see the effect of the updated threshold settings.

Step 7: Test the New Settings with the Topography Plugin

Now that you’ve updated the Revit.ini file, it’s time to test the new settings by using our free Topography plugin. This plugin, available at https://goto.archi/topography, allows you to generate complex, detailed toposolids using classified LiDAR data.

1. Launch the Topography plugin in Revit 2026.
2. Import or create a toposolid using your LiDAR data.
3. Observe the level of detail in the new toposolid. If you set the threshold to a higher value (e.g., 50,000 points), you should see a more precise representation compared to the default setting.
4. Note any changes in modification times. Remember, a higher point count may slow down editing due to the increased complexity.

Conclusion

By adjusting the toposolid point threshold in Revit 2026 via the Revit.ini file, you unlock the ability to create highly detailed topographical models—essential for projects that require precise representations of terrain data. This tutorial has provided a step-by-step guide on locating, backing up, and editing the Revit.ini file to change the threshold, and it explains how these adjustments can enhance your use of the Topography plugin.

If you want to dive deeper into other exciting features of Revit 2026, be sure to check out our follow-up article: What's New in Revit 2026.

If you found this tutorial helpful, please share it with your colleagues and fellow Revit professionals. Happy modeling!