Nautilus 608 revised connector

I thought that the Nautilus gear spinners were great, math in hand (logarithmic spiral, and what should be a Fibonacci sequence for the shell partition spacing although maybe it isn't) and they printed well. But when I handed one to my wife she put it down after a second - the hardware I used stuck out of the thing and irritated her hands - it was sharp everywhere, it seemed. She suggested I redesign the connector and so I did. I do most of my design work, such as it is, in openSCAD. This wa