I need to change the battery in my CASIO MDV-106 diver watch, but I doesn't have an opener on hand.
3D print to the rescue! I downloaded Chuckdotdot's OpenScad file, modify it to fit my watch, get it printed and I my watch is opened 40 minutes later.
Since I had some time, I optimized his SCAD script to support Thingiverse's customizer, simplify it and add ability to change number of pins. Now you can easily customize it to fit your own watch!