Homemade GENERATOR GEARBOX, power almost any usb device

Follow along as I 3d print different gearboxes, try different gear ratios, and explain the science behind these mechanisms. BEST ALL AROUND 3D PRINTER: Printer: Creality Ender 3 Buy it here: Learn how to design your own things for 3D Printing using Blender: I am selling this exact generator (excluding electronics). There is only one available and it signed and dated by me: Support our mission of making 3d printing accessible for everyone: First 20 Patreon supporters receive unlimited access to premium downloads: Recommended Amazon Products: Ender 3 Pro: White PLA: Copper PLA: AC Generator: DC Motors: