A simple 3D printable kill switch design for an underwater craft that uses a normal toggle switch. This is a 3-part model and you will need one m3 screw to assemble it. after assembly, you can waterproof it by adding silicone or resin to the switch. Here is the fusion 360 file if anyone needs to edit it https://drive.google.com/file/d/1fgdD3sPEXcwh9Zs0wMqOLs6X1B4GmkPQ/view?usp=sharing .Happy making!