Once you have found the correct settings for your eraser, you might want to reuse it throughout your project for consistency. You can do that by creating and using eraser presets.
Harmony comes preloaded with a few eraser presets which you can select from the Tool Properties view. It is also possible to create your own eraser presets by configuring your eraser then saving it as a preset.
Eraser presets are saved in your preferences. You can also export your eraser presets into an .xml file, and import them on a different workstation, allowing you to share your eraser presets between the different people collaborating on your project.