When reading with my daughters it's wonderful to hold them in one arm. This results in reading with one hand. Now and then the book slips or the pages flip undesirable, so I decided to make one of these thumb page holders like this one or that one. Depending on the material it so fast to make I thought of making some more to have little presents at hand. Plus it's a good test to see what material works best with the tiny cnc.
These builds were done on a desktop cnc-machine by Stepcraft. I used various woods, plastics and aluminum.
Visit https://www.zenziwerken.de/en/ for more interesting designs.