I Built a Cordless Mini Grinder From Scratch! 🔥 3D Printed + USB-C

In this project, I built my own rechargeable mini grinder / rotary tool using a 3D printed body, lithium battery, USB-C charging, and a 3-jaw chuck. The chuck lets me use different bits, sanding discs, grinding wheels, and other tools, making this little machine surprisingly versatile. I designed and 3D printed the body, assembled the electronics and battery, added USB-C charging, and put everything together into a compact cordless tool. Features: 🔋 Rechargeable Lithium Battery 🔌 USB-C Charging 🖨️ 3D Printed Body 🔧 3-Jaw Chuck ⚙️ Compatible with Different Bits & Sanding Tools 🔥 Fully Cordless This was a really fun DIY build, and I'm honestly surprised by how useful such a small tool can be. Would you build one? #DIY #MiniGrinder #RotaryTool #3DPrinting #DIYProjects #CordlessTools #Engineering #Maker #Electronics #USBCC