3D Printed Adjustable Watch Case Opener (Screw-Back)

This adjustable watch case opener is designed for screw-on watch backs with notches. It replicates the classic two-pin tool but in a fully 3D printed mechanism, making it accessible and easy to build at home.

The entire body and adjustment system are fully 3D printed. The only non-printed parts are the two metal pins, which are made to fit standard interchangeable screwdriver bits commonly found in inexpensive tool kits. Many makers already have these, making this tool affordable and practical.

• Adjustable pin spacing – fits different screw-back watches.
• Uses standard screwdriver bit tips as pins.
• No special hardware required.
• Fully functional and maker-friendly design.

Perfect for opening and closing screw-back watches for battery replacement, repairs, or tinkering.