Magnesium, Copper, Water and Alum Spiral Battery

thingiverse

Create your own galvanic battery, and the output voltage will be roughly around 1.5 volts - with the current amperage varying based on the type of electrolyte used. - Wind a small groove in the negative connection point using 1/8 inch magnesium ribbon. - For the positive connection, wind 1/4 inch copper ribbon around the outside. This battery is comprised of at least three parts: the end caps have a hole for a bolt that securely holds the magnesium ribbon in place. The middle part can be connected to itself without disrupting the spiral pattern within it - allowing you to make this battery as long or short as desired (the longer it is, the higher the amperage output). With a diameter of 1 inch, this battery accommodates standard 1-inch PVC tubing as a case for the electrolyte. Possible electrolytes that can be used are water with alum, water with sodium bicarbonate, vinegar, or plain water (resulting in the lowest amperage but minimal metal corrosion). The 3D model file is included if you want to make custom modifications, as always - best of luck!