I got a problem using remesh all.
this is what i do:
create a cube3D
enter edit mode
click make polymesh3d
in subtool palette click append
in the now opened menu i click cylinder3d
in the subtool palette i click on the cylinder
click move
use the transpose tool to move the cylinders center to an edge of the cube
in subtool palette i click the substract icon on the cylinder
i click remesh all
zbrush is telling me that the resulting object would have zero vertices and does nothing.
what am i missing?