Volumetric brush (box brush)

First sketches showing the potential of the new volumetric brush (here the box version was used). Size and density and brush mode (additve, multiply or replace) can be customized. Here I first used a massive brush size with high positive density to create the box, then switched to negative density and smaller size to carve out. The colours are visualizing curvature and were applied in Meshlab later.

Done