
Paint Tool SAI is a software application for Microsoft Windows that lets users digitally paint, blend, and enhance photos and illustrations. The software offers a variety of tools, including pressure-sensitive brushes, which can be customized to achieve different effects. While the pressure sensitivity feature is a useful tool, some users have reported issues with it not working. This issue can be caused by a variety of factors, including outdated or uninstalled drivers, incorrect settings, or compatibility issues. To resolve this, users can try updating their tablet driver, adjusting the Min Size and Click detection pressure settings, or reinstalling the driver and rebooting their computer.
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What You'll Learn

Ensure your tablet driver is up to date and functioning properly
To ensure your tablet driver is up to date and functioning properly, you should first check that the driver is installed. Drivers are not optional if you want your tablet to function correctly. They are free to download from the manufacturer's website. It is possible for a driver to uninstall itself, so always check that it is still installed after updating.
If your tablet driver is not functioning, you may need to uninstall and reinstall it. First, unplug your tablet, then go to 'install/uninstall programs' and uninstall your current driver. Then, install the new driver and plug your tablet back in. If this does not work, you may need to download a different version of the driver and repeat the process.
If you are using a Wacom tablet, you can try the following method: go to Control Panel > View Devices and Printers. Find your tablet, right-click on it, and select 'Wacom Tablet Properties'. From here, you can access the 'Wacom Tablet Preference File Utility'. If you have changed your settings and your pen pressure stops working, you can restore your settings by clicking 'restore' in the 'Wacom Tablet Preference File Utility' window.
If you are using a Wacom Intuos tablet, you may need to try something different. One user reported that they fixed their tablet driver issues by going into their video card preferences and changing their display settings.
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Adjust your brush settings
Firstly, ensure that your tablet driver is up to date and functioning properly. Visit the manufacturer's website to download the latest drivers if needed. It is also important to check if the driver is correctly installed, as this is crucial for the tablet's proper functioning.
Next, navigate to your brush settings. Here, locate the "Min Size" setting and adjust it to a value below 100%. Lowering the "Min Size" will allow for a higher range of pen pressure sensitivity.
After that, access SAI's toolbar and click on "Others," followed by "Options." This will open up the "Options" window, where you can configure various settings.
In the "Options" window, navigate to the Digitizer Support" tab. Here, you will find the "Click detection pressure" setting. Adjust this setting to "0" to ensure optimal pressure sensitivity.
Finally, click OK to save your changes. If your pen pressure is still not functioning correctly, there are a few additional troubleshooting steps you can take. Try reopening the program, or even rebooting your entire computer, to see if that resolves the issue.
If the problem persists, you may need to reinstall your Wacom driver and then test your pen pressure in SAI.
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Set Click detection pressure to 0
If you are experiencing issues with your pen pressure sensitivity in Paint Tool SAI, one suggested fix is to set the "Click detection pressure" to "0".
To do this, first, open your brush settings. Ensure that the ""Min Size" is set to a number under 100%. A lower "Min Size" allows for a higher range of pen pressure. Then, on SAI's toolbar, click "Others", then "Options". In the ""Digitizer Support" tab, you will find the "Click detection pressure" setting. Set this to "0".
Some users have reported that this method did not work for them, and they had to take additional steps. These include reinstalling your Wacom driver, rebooting your computer, and then opening SAI to test if your pen pressure works. Another solution is to download a driver called "N-trigger", which should enable pen pressure sensitivity in SAI.
It is also recommended that you check your tablet driver is up to date and functioning properly, and if not, download the latest version from the manufacturer's website.
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Reinstall your Wacom driver
Reinstalling your Wacom driver can be a useful step to resolve issues with pen pressure sensitivity in Paint Tool SAI. Here's a detailed guide on how to do it:
Back Up Your Preferences
Before proceeding with the uninstallation, it's important to back up your Wacom preferences. This process will remove any configured preferences, so ensuring you have a backup will allow you to restore your settings if needed.
Uninstall the Wacom Driver
To uninstall the Wacom driver on Windows, follow these steps:
- Go to "Start" and then navigate to "All Programs" or "All Apps."
- Open the "Wacom" or "Wacom Tablet" folder.
- Click on "Wacom Preferences" or "Wacom Tablet Properties."
- If you encounter any errors, take a screenshot and note the issue.
- Test all pen and button functionality before restoring any preferences from your backup.
- Uninstall any "Tablet," "Wacom Tablet," or "Bamboo" entries from the list.
For macOS, the process is slightly different:
- Open the Wacom Tablet Utility.
- Under "Tablet Software," click "Uninstall."
- Provide administrative credentials if prompted by OS X.
Restart Your Computer
After uninstalling the Wacom driver, restart your computer. This step is important to ensure a clean slate for the upcoming installation.
Download and Install the Latest Driver
Once your computer has restarted, it's time to install the latest Wacom driver:
- Visit the Wacom Driver Page: https://www.wacom.com/support/product-support/drivers.
- Identify the correct driver for your specific Wacom model.
- Download the appropriate driver for your device.
- Disconnect from the internet and disable any security software, including the Windows firewall, to ensure a smooth installation process.
- Run the downloaded installer and follow the installation instructions.
- After the installation is complete, reconnect your tablet directly to your computer, avoiding USB hubs or keyboard/monitor ports.
- Restart your system and reconnect the tablet if using macOS.
Test Your Tablet
After reinstalling the Wacom driver, it's important to test your tablet's functionality:
- Open Wacom Desktop Center and navigate to "Pen Settings."
- Alternatively, go to Apple > System Preferences > Wacom Tablet.
- Test all pen and button functions to ensure they are working as expected.
If you encounter any issues or your saved preferences aren't working properly, you may need to reset the preferences or recreate them manually from a backup.
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Use OpenTabletDriver
If you are facing issues with pressure sensitivity in Paint Tool SAI, there are several troubleshooting steps you can take to resolve the problem. Firstly, ensure that your tablet driver is up to date and functioning properly. You can usually find and download the latest drivers for your tablet model from the manufacturer's website. If the driver seems to be working fine, try restarting SAI or your computer, as this has been known to resolve pen sensitivity issues.
If the problem persists, it may be related to the settings within the SAI software itself. To address this, open SAI and go to the "Other (O)" or "Others" option in the menu bar, then select "Options (O)". In the "Options" window, navigate to the "Pen Tablet" or "Digitizer Support" section. Here, you should select the "Use WinTab API" option and ensure that the "Click Detection Pressure" or "Click detection pressure" bar setting is set to "0". Once you've made these changes, click "OK" to apply them.
If you're still experiencing issues with pressure sensitivity, you can try using OpenTabletDriver. OpenTabletDriver is a community-driven driver that can enhance tablet functionality in certain applications. To use it, you may need to disable Windows Ink and utilise smoothing plugins offered by the OpenTabletDriver community, such as the VMultiMode plugin's VMulti Relative Mode. Keep in mind that some applications with anti-cheat software, like Valorant, may block input from OpenTabletDriver's Absolute Mode. In such cases, using VMulti, a kernel-level driver, can be a viable alternative.
Before resorting to third-party drivers like OpenTabletDriver, it's recommended to explore other potential solutions. For instance, if you're using a Wacom tablet, you can try adjusting settings through the Control Panel. Go to "Control Panel" > "View Devices and Printers", locate your Wacom tablet, right-click on it, and access the "Wacom Tablet Properties" window. Here, you can modify settings that may impact pen sensitivity.
Additionally, if you're using Linux, there are specific methods to get Paint Tool SAI working with full tablet pressure sensitivity. You can refer to guides on GitHub that detail the process of using Bottles and Wine to achieve this. These guides provide step-by-step instructions to ensure compatibility and functionality between Paint Tool SAI and Linux.
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Frequently asked questions
In your brush settings, ensure that “Min Size” is set to a number under 100%. Lower “Min Size” allows for a higher range of pen pressure.
Go to Control Panel > View Devices and Printers. Find your tablet, right-click on it, and select Wacom Tablet Properties. In the Wacom Tablet Properties window, navigate to the Pen Tablet section and pick Use WinTab API.
Try reinstalling your Wacom driver, rebooting your computer, and then testing your pen pressure in SAI.
Ensure that your tablet drivers are up-to-date and functioning properly. If you're using Linux, you can try using OpenTabletDriver.
Yes. In Paint Tool SAI, you can use pressure sensitivity with a mouse by clicking and dragging the point in the curve.











































