Toy Climbing Robot Gear

thingiverse

My friend asked me to help repair or replace his grandson's toy robot, which had a stripped gear. The little robot was a favorite among kids, and I wanted to get it working again. The gear in question was 14mm in diameter with 26 teeth on the main gear and an attached smaller gear with 10 teeth. I used nylon filament with a 0.2mm nozzle to print a replacement gear. With Fusion 360's easy-to-use gear plugin, modeling the new gear was a breeze - just enter a few parameters and let the software do the math for you. The result wasn't perfect but it closely matched the original gear and worked flawlessly. This robot has magnetic feet that allow it to climb steel walls with ease. I think this is the robot: https://www.sciplus.com/climbing-robot-magnet-kit-63578-p The gears attached to each other are quite intricate. The larger one measures 14mm in diameter and 1.5mm high, with 26 teeth. The smaller gear is about 6mm in diameter by 4mm high and has 10 teeth. A 2mm hole runs through the gears for the metal shaft. Check out this video of the robot in action: https://youtu.be/D7yfSLg4D9A