Sister wanted a page holder. I downloaded several models from the net, but none of them suited me overall, so I created an ideal page holder for several attempts and then made it out of wood. I was concerned with the ideal curvature, the size of the hole for the thumb because the thumb is not usually perpendicular to the book but slightly at an angle, and a few other details that did not suit me on the other models.
The author marked this model as their own original creation.