I'm trying to create a wall HDA, that can be used to create different types of walls, i.e. Brick, Stone and the different ways you may encounter those walls.

I like to have control over the pattern, how much space in between stones/bricks and the mortar used.

I've tried different things, including Peter Quint approach but seem to be stuck getting anywhere solid.

I would greatly appreciate a nod in the right direction please to get me started.

cheers

André