To save a state and then erase back to it
- Select Surfaces > Sculpt Geometry Tool > .
- In the Tool Settings, make sure the Update on Each Stroke option next to Erase Surface (at the bottom of the Sculpt Parameters section) is off.
- To save the current state of a sculpted mesh, click the Update button next to Erase Surface.
- When you want to paint back to the saved state, set Operation to Erase.
To be able to paint out only the effects of your last stroke
- Turn on the Update on Each Stroke option next to Erase Surface (at the bottom of the Sculpt Parameters section).
- To paint out part of the last stroke, set Operation to Erase.