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 was no exception. I built disks thick enough to allow the hardware to be completely countersunk. I made everything parametric. I have uploaded the stl files - but there is one extra - it seemed that two gears just were not enough - so I included stl files for a bar that will connect four gears. You can use the scad file to build on that if you want to, I have sort of wondered if a hexagon would close properly. Once I got the two bars as I wanted them it was easy to add more since it was just