This is a very handy tool for bookbinding. It makes punching holes in your sections a lot easier. The 45 degree recess was made by a local carpenter using his rotating circular saw. (It took 3 minutes!) The top part was destroyed in the process, so I made that part out of cardboard. Different versions allow for variation.
Algunos hacen sus cunas de cartón, como enseñan en este taller:
Finalmente, decirte que para perforar tus cuadernillos con el directorio telefónico basta