Poor soul of Josie Packard trapped in a knob.
It's 5cm wide and fits an M6 screw.
If you want the wood grain just like the original, print it at an angle as shown in one of the pictures. I find that the layer lines can help make it look like wood so I printed it at 0.2mm and only did some minimal sanding. It would probably be great with wood filament but I layered some washes of light to darker brown paint and like how it turned out.
The author hasn't provided the model origin yet.