This 3D Model ist the missing part of my other model "sphere spiral d16mm" with a sphere diameter of 16mm.
The purpose of it is to symbolise two parts, that complement to one another like it should be in a harmonic partnership.
This part has to be made from flexible material. The other part "sphere spiral" can be made from a rigid material like silver for example.
To mount the filler part just screw it on the spiral.
The filler part snaps tightly into the spiral but with a needle like tool you can lift it and screw it off the spiral again.