4.1. Set Tool Size

Drag to set the brush size for Sculpting and Mesh tools.

While using sculpting tools the brush size is shown as a dotted ring in the 3D view. The solid inner ring shows the falloff of the current brush - with a small ring showing a spike shaped brush, and a large ring a blunt flat brush.

Shortcut

Hold Ctrl with a sculpting tool selected and drag to set the tool size.

4.2. Add

Sculpt by adding volume to create bumps.

4.3. Sub

Sculpt by subtracting volume to create dents.

4.4. Clay

Sculpt by adding volume to create smooth bumps.
Smooths the surface as it sculpts like adding clay worms and blending them in.
N.B. For best results increase the intensity to add more clay.

4.5. Clay Sub

Remove volume from surface while smoothing.

4.6. Groove

Cuts into the surface to a fixed depth.

4.7. Step

Cuts into the surface on one side of the stroke and builds up the other side to make a step.
N.B. The direction of the stroke matters, for a step in opposite direction reverse the direction of your stroke.

4.8. Pinch

Paint to Tighten and Shrink the surface along the stroke.

4.9. Inflate

Sculpt by inflating the surface. More rounded effect than 'Add'.

4.10. Deflate

Sculpt by deflating the surface. More rounded effect than 'Sub'.

4.11. Fill

Fills dips and holes in a model.

4.12. Flatten

Paint to flatten the surface.


Use the Right Mouse Button to draw with the Flatten Tool to Flatten to View.
Paint to flatten the surface towards the current viewport.

4.13. Noise

Paint to Roughen up the surface with random displacements.

N.B. For the roughest result you will need to disable the automatic polish that smooths out the other sculpting tools.
Just untick Polish in the Sculpt Tool Controls.

4.14. Rounded

The the surface under the brush into a spherical shape.
Useful for making parts of the model rounder.

4.15. Flattened

Smooth the surface to a flattened shape.
With a low intensity is very helpful at softly smoothing out curved surfaces too.

4.16. Curved

Smooth the surface with a smooth curved form.

4.17. Pull Tubes

Drag out worm shaped extrusions from the mesh surface.

4.18. Custom Brush

Choose a (small) image to use as a stamp on your model. Click to place stamps of your image onto the mesh's surface.
You can reverse the effect and switch to an alternative stamping mode (Slice) in the options below the toolbox.

4.19. Smooth

Paint to smooth the surface. Elastic effect will tend to shrink the surface.

4.20. Polish

Paint to polish the surface. Improve surface curvature with little change to volume.
Polish has a more subtle effect than Smooth, fixing small defects while leaving the overall shape intact.

4.21. Paint Surface Colour

Colour the mesh vertices directly - does not need texture maps.
N.B. See the Painting Tools to alternatively paint texture maps.

Object shown above in wireframe (Press A) to demonstrate that surface colour is set at the corners of each triangle on the mesh. This is different to texture mapping which sets a colour at each pixel of the texture image.
When Automatic Subdivision is turned on Curvy will add mesh detail where you use a small brush to paint the surface.

4.22. Smooth Surface Colour

Smooth the vertex colours.