Consider, if you will, this soundpost removed from a customer's violin. The method of fitting: chew off the end of a stick, build it up with putty, then sand to the appropriate bevel. When inserting in the violin, add a dab of hide glue to the ends.
These are just some of the things they won't teach you in violin-repair courses.
Flashed view of the putty-end soundpost, to show a different contrast.
As interesting as this one was, I replaced it with a more traditional soundpost, one without putty or glue on the ends.