Params
Switch Volumes

Follows
Volume A

Takes the first volume (this can be a volume, another csg or a surface reconstructor)
Volume B

Takes the second volume.
Mode

This defines the boolean operation performed on the volumes.
Union
Returns the union of the both volumes.
Intersection
Returns only the volume area where the two volumes intersect.
Difference
Returns only the volume area where the two volumes differ.
Isosurface

Moves the surface (distance) of the resulting volume (surface). The surface of the volume is normally located at 0.0 distance but with this value you can easily extent or shrink the volume area.
Blend radius

Follows
T

Follows
Blend Mode

Follows