This little thing is the result of a lot of work, a lot of mistakes, and a lot of lessons learned today:
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Nominal dimensions are:
Major OD= 27.1mm … Length =6mm
Minor OD =25.1mm … Length =6mm
Bore = 24.1mm … Length =11.6mm
This leaves a thin diaphragm on the end, as a good base for printing, which will be removed manually.
In case it’s not obvious ; it’s a simple adapter to mount a small camera.
The general principle will serve me well, now I know how to model it !
MichaelG.
Per Ardua ad Astra