The control knob of this Philips BD563A broke because the previous owner didn’t notice or care that the knob was turning heavily and so after a while it broke out.
Since it is basically impossible to get the right colour AND type of knob, one has to come up with something. Printing a new button is not an option, since I do not own a printer and part of the knob is in plain view.
So I fabricated a sliding axle and have affixed part one of the control mechanism onto it. No glue, just a precise cut and some thinking it over many times.