How delicate to go?

I spent today shaping the individual forms into the shapes that I want. I have had to be careful not to cut away too much of the marble holding the segments together or the whole thing will become too fragile or worse; break. I want the segments to look like separate entities touching rather than something more solid. There is quite a good deal more work to sharpen the junctions between the forms but I might put this aside and crack on with another piece along this vein. This sculpture was carved from a slab which I have split into four and might therefore make a mini series within this series, of circular sculptures.