Fill

Reference

Mode

Sculpt Mode

Tool

Toolbar ‣ Fill

Works like the Flatten brush, but only brings vertices below the brush plane upwards.

Area Radius

Ratio between the brush radius and the radius that is going to be used to sample the area center.

Invert to Scrape

When enabled, holding Ctrl while sculpting changes the brush behavior to be the same as the Scrape brush. When disabled, holding Ctrl while sculpting, will push vertices below the cursor downward.